DSSSB Assistant Superintendent Official Paper (Held On: 16 Jun, 2019 Shift 2) (Previous Year Paper)

Mirror image of the given figure is,

Hence, the correct answer is “Option 2”.

Five buses for five different cities Agra, Kanpur, Lucknow, Meerut and Varanasi depart from five bus terminals T-1 to T-5 but not necessarily in the same order.

1. The Lucknow bus departs from T-2.  2. The Kanpur bus leaves from T- 4. 3. The Varanasi bus does not depart from T-1 or T-4. 4. The Meerut bus goes either from T-1 or T-5.  5. The Agra bus does not leave from T-3 or T-1. 

From terminal T-5 the bus for Agra leave.

Hence, the correct answer is “Option 4”.

Here,

In figure 1, 2 and 4, shaded area having horizontal or vertical lines.

While,

In figure 3, shaded are having both horizontal and vertical line together crossing each other.

Hence, figure 3 is different from other.

Hence, the correct answer is “Option 1”.

Water image of given combination,

Hence, the correct answer is “Option 2”.

Court : Judgment 

• A Court is the place where legal proceedings occur, and its ultimate product or outcome is a Judgment.

Similarly,

• A Class is the place where teaching and learning occur, and its ultimate product or outcome is Education.

Hence, the correct answer is “Option 1”.

Here,

• Cuba is a country (in the Caribbean).
  
• Fiji is a country (in Oceania).
• Kyat is a currency (used in Myanmar).
• Oslo is a city (the capital of Norway).

The other three are either a country or a city, while Kyat is currency.

Therefore, Kyat is odd from all.

Hence, the correct answer is “Option 3”.

BDF: 48

B = 2

D = 4

F = 6

2 × 4 × 6 = 48

Similarly,

FHJ:?

F = 6

H = 8

J = 10

6 × 8 × 10 = 480

Hence, the correct answer is “Option 4”.

North Indian boys are tall persons but are NOT food lovers

There are 12 North Indian boys are tall persons but are NOT food lovers.

Hence, the correct answer is “Option 1”.

According to the given information,

He is in South direction with reference to his home.

Distance = (30 + 45) - 50 = 25 km

Hence, the correct answer is “Option 2”.

Logic followed here is,

8:128

8² × 2 = 64 × 2 = 128

Similarly,

10:?

(10)² × 2 = 100 × 2 = 200

Hence, the correct answer is “Option 1”.

The figure which complete the pattern of the figure,

Hence, the correct answer is “Option 3”.

Six friends Gopal, Sheela, Reena, Senthil, Hina and Gaurav are standing in a row.

1. Only one person is standing before Gopal.  
2. Gaurav is between Gopal and Hina, who is third from the back end of the row. 3. There are two persons between Sheela and Hina.
3. Reena is between Hina and Senthil. 

Gopal and Gaurav standing between Sheela and Hina.

Hence, the correct answer is “Option 4”.

When we see the opposite pairs,

Opposite pair:

3 ↔ 4

5 ↔ 6

2 ↔ 1

Hence, the correct answer is “Option 4”.

DFH: WUS

Similarly,

KMO:?

Hence, the correct answer is “Option 4”.

According to the given information,

Lokesh is facing South Direction.

Hence, the correct answer is “Option 1”.

Here, 

29, 31 and 37 are prime numbers.

While,

33 is a composite number.

Hence, the correct answer is “Option 4”.

In the given figure,

In dice I and II, 2 is common.

Now, rotating clockwise from common side,

3 is opposite to 4

5 is opposite to 6.

Hence, the correct answer is “Option 2”.

Here, 

2nd figure is mirror image of 1st figure.

Similarly, 4th figure should be a mirror image of 3rd figure.

Hence, the correct answer is “Option 4”.

The sheet appear when it is folded along the dotted line 

Hence, the correct answer is “Option 2”.

Logic: (First number)² + (Second number)² = Third number

(1): 2, 7,53

2² + 7² = 4 + 49 = 53

(2): 4, 6, 50

4² + 6² = 16 + 36 = 52

(3): 3, 5, 34

3² + 5² = 9 + 25 = 34

(4): 2, 4,18

2² + 4² = 4 + 16 = 20 ≠ 18

Hence, the correct answer is “Option 4”.

Pattern followed here is,

Hence, the correct answer is “Option 4”.

POSSIBLE is coded as 1615191992125.

Similarly,

SERVICE be coded as,

Hence, the correct answer is “Option 1”.

The criteria set by a company for the post of Accounts Manager.

Thus, Rachana is not applicable for the post of Accounts Manager.

The candidate is to be rejected.

Hence, the correct answer is “Option 3”.

Least possible Venn diagram,

Conclusions:

I. Some singers are officers → Follow (All officers are singers. so, some singers are officers is definitely follow).

II. No singer is an officer → Does not follow (All officers are singers. so, it is not follow).

Only conclusion I follows.

Hence, the correct answer is “Option 1”.

Given Expression:  P + M ÷ Q × N × T - U

P is Father of M, M is Sister of Q, Q is daughter of N, N is daughter of T and T is husband of U.

P is husband of N.

Hence, the correct answer is “Option 1”.

Venn diagram that best represents the relationship between Men, Gynaecologist, Doctor is,

Hence, the correct answer is “Option 4”.

According to the given information,

Adah is Granddaughter of Veenu.

Hence, the correct answer is “Option 4”.

Given symbols:

(A) &%$#%$%#&%$

(B) &%$&%$@#&%$

(C) &%$@\%$@#&%$

(D) &%$#%$@#$\%$

(E) &%$#%$@#&%$

(F) &%$#%$@#&%$

Here E and F are exactly same.

Hence, the correct answer is “Option 4”.

Least possible Venn diagram,

Conclusions:

I. Some foreigners are experts → Follow (Some tourists are expert and all tourists are foreigners. so, some foreigners are definitely expert).

II. Some foreigners are girls → Does not follow (There is no direct relation given between foreigners and girls. so, it is possible not definite).

III. No foreigner is a girl → Does not follow (There is no direct relation given between foreigners and girls. so, it is possible not definite).

IV. All tourists are experts → Does not follow (Some experts are tourists. All tourists are expert possible not definite)

Conclusion I and either II or III follows

Hence, the correct answer is “Option 3”.

According to the given information,

Hence, the correct answer is “Option 1”.

The criteria set by a company for the post of Accounts Manager.

Thus, Manav is applicable for the post of Accounts Manager.

The candidate is to be selected.

Hence, the correct answer is “Option 4”.

Given symbols:

(A) 254879381     (B) 254879831

(C) 254897381     (D) 254897381

(E) 254897831     (F) 258497381

C and D are same.

Hence, the correct answer is “Option 1”.

There are five teachers named A, B, C, D and E. Each of them teaches one of five different subjects ie. Physics, Chemistry, Botany, Zoology and Mathematics.

1. Mathematics is taught by B. 2. C does not teach Botany, Chemistry or Physics.

Which means C teach Zoology

3. A does not teach Botany or Zoology.
4. E does not teach Chemistry or Botany. 

E teaches physics.

Hence, the correct answer is “Option 2”.

Pattern followed here is,

Hence, the correct answer is “Option 2”.

MAGNIFICENT is written as JOHBNFUOFDJ.

Similarly,

PROMISCUITY be written in the same language as,

Hence, the correct answer is “Option 3”.

Triangles in the given figure,

There are 22 triangles present in the given figure.

Hence, the correct answer is “Option 3”.

Given series: 40, 20, 20, 30, 60, ?

40 × 0.5 = 20

20 × 1 = 20

20 × 1.5 = 30

30 × 2 = 60

60 × 2.5 = 150

Hence, the correct answer is “Option 3”.

Lets assume first number = a

Second number = 2a

Third number = 3a

The total of three numbers is 120. 

a + 2a + 3a = 120

6a = 120

a = 20

Second number = 2 × 20 = 40

Third number = 3 × 20 = 60 

Hence, the correct answer is “Option 2”.

Given series: 15, 19, 28, 44, 69, ?

15 + 2² = 15 + 4 = 19

19 + 3² = 19 + 9 = 28

28 + 4² = 28 + 16 = 44

44 + 5² = 44 + 25 = 69

69 + 6² = 69 + 36 = 105

Hence, the correct answer is “Option 2”.

There are five boxes: A, B, C, D and E. 

Box B is twice as heavy as box A. 

B = 2A

Box C is 20 kg heavier than box E. 

C = 20 + E

Box D is one-and-a-half times as heavy as box E.

D = 1.5 E

Box C is four times as heavy as box A.

C = 4A

The weight of box E is 20 kg.

Now,

Weight of C = 20 + 20 = 40 Kg

Weight of D = 1.5 × 20 = 30 

Weight of A = C/4 = 40 /4 = 10 Kg

Weight of B = 2 × 10 = 20 Kg

C is the heaviest among the all and its weight is 40 Kg.

Hence, the correct answer is “Option 3”.

The correct answer is Miranda House, Delhi University.

Key Points

• In the National Institutional Ranking Framework (NIRF) 2019, Miranda House, Delhi University, achieved the top rank in the college category.
• This marked the third consecutive year of Miranda House securing the #1 position in the NIRF rankings, demonstrating its consistent academic excellence.
• The National Institutional Ranking Framework (NIRF) ranks institutions based on parameters such as teaching, learning, resources, research, graduation outcomes, outreach, and inclusivity.
• Miranda House is renowned for its emphasis on academic rigor, co-curricular development, and providing a vibrant campus environment for its students.
• Established in 1948, Miranda House has been one of the premier institutions under the University of Delhi, offering undergraduate and postgraduate programs in science, arts, and humanities.

Additional Information

• Hindu College, Delhi University
• Hindu College is one of the oldest and most prestigious colleges in India, established in 1899.
• The college is known for its excellence in science, humanities, and commerce streams, with a strong focus on extracurricular activities.
• It ranked among the top colleges in NIRF rankings consistently but did not secure the top spot in 2019.
• Lady Shri Ram College for Women, Delhi University
• Established in 1956, Lady Shri Ram College (LSR) is a premier women's institution under Delhi University.
• It is famous for its programs in arts, commerce, and social sciences and is consistently ranked among the top colleges for women in India.
• While LSR has performed exceptionally in various rankings, it was ranked below Miranda House in the NIRF 2019 rankings.
• St. Stephen’s College, Delhi University
• St. Stephen’s College, founded in 1881, is one of the most prestigious colleges under Delhi University, known for its academic excellence and heritage.
• It offers undergraduate and postgraduate programs in science, humanities, and social sciences.
• Despite its high reputation, St. Stephen’s ranked below Miranda House in the NIRF 2019 rankings.

The correct answer is Kalyanji-Anandji.

Key Points

• Kalyanji-Anandji were a renowned music director duo in Bollywood who were real-life blood brothers.
• Kalyanji Virji Shah and Anandji Virji Shah were born in Gujarat, India, and became famous for their unique and melodious compositions in Hindi cinema.
• They started their musical journey in the late 1950s and gained widespread popularity during the 1960s and 1970s.
• The duo is credited with iconic works in movies such as Don (1978), Safar (1970), and Qurbani (1980), among others.
• In 1992, they received the Padma Shri, India’s fourth-highest civilian award, for their contribution to Indian music.

Additional Information

• Shankar-Jaikishan
• This legendary music director duo, comprising Shankar Singh Raghuvanshi and Jaikishan Dayabhai Panchal, were not blood-related but were close collaborators.
• They dominated the Bollywood music scene in the 1950s and 1960s, producing evergreen songs in movies like Sangam (1964) and Junglee (1961).
• Their style combined classical Indian music with Western influences, creating a unique sound.
• Nadeem-Shravan
• Nadeem Akhtar Saifi and Shravan Kumar Rathod were a popular music composer duo in the 1990s but were not siblings.
• They are known for their romantic soundtracks in movies like Aashiqui (1990), Saajan (1991), and Raja Hindustani (1996).
• Their music often featured soulful melodies and heartfelt lyrics.
• Laxmikant-Pyarelal
• Laxmikant Shantaram Kudalkar and Pyarelal Ramprasad Sharma formed another prominent music composer duo but were not related by blood.
• They worked together on over 500 films, creating timeless tracks for movies like Bobby (1973) and Amar Akbar Anthony (1977).
• Their contribution to Bollywood music remains unparalleled, earning them multiple Filmfare awards.

The correct answer is Calcutta High Court.

Key Points

• The Calcutta High Court is the oldest High Court in India, established in 1862 under the Indian High Courts Act of 1861.
• The High Court operates a circuit bench in Port Blair, which serves as the highest judicial authority for the Union Territory of Andaman and Nicobar Islands.
• The jurisdiction of the Calcutta High Court extends over the state of West Bengal and the Union Territory of Andaman and Nicobar Islands.
• The Port Blair bench addresses cases from the Andaman and Nicobar Islands, ensuring justice for the residents of this remote territory.
• The Chief Justice and other judges of the Calcutta High Court are appointed by the President of India under Article 217 of the Indian Constitution.

Additional Information

• Madras High Court
• It is one of the oldest High Courts in India, established in 1862 along with the Bombay and Calcutta High Courts.
• The Madras High Court has jurisdiction over the state of Tamil Nadu and the Union Territory of Puducherry.
• It is known for its architectural grandeur and is one of the largest judicial complexes in the world.
• Telangana High Court
• The Telangana High Court was established on 1 January 2019 following the bifurcation of the Andhra Pradesh High Court.
• It serves as the highest judicial authority for the state of Telangana.
• The court is located in Hyderabad and addresses cases under its jurisdiction within the state.
• Patna High Court
• The Patna High Court was established on 3 February 1916 and serves as the High Court for the state of Bihar.
• It is known for its historical significance and has played a critical role in shaping the legal framework of the state.
• The Patna High Court has jurisdiction over civil, criminal, and constitutional cases arising within Bihar.

The correct answer is England.

Key Points

• John Dalton was born on September 6, 1766, in Eaglesfield, a small village in Cumberland, England.
• He is renowned for introducing the Atomic Theory to modern chemistry, which stated that all matter is composed of indivisible atoms.
• Dalton's work laid the foundation for the law of multiple proportions, which later became a cornerstone of chemical sciences.
• He also conducted significant research in meteorology and color blindness, the latter of which is sometimes referred to as Daltonism in his honor.
• Dalton was a member of the Royal Society and received several awards for his contributions to science, including the Royal Medal in 1826.

Additional Information

• Netherlands
• The Netherlands has a rich scientific history, with notable figures like Antonie van Leeuwenhoek, the "Father of Microbiology," who developed powerful microscopes and was the first to observe microorganisms.
• Christiaan Huygens, another Dutch scientist, made significant contributions to physics, particularly in wave optics and the invention of the pendulum clock.
• France
• France is home to prominent scientists like Antoine Lavoisier, regarded as the "Father of Modern Chemistry," who established the law of conservation of mass.
• Marie Curie, a French-Polish scientist, was a pioneer in the field of radioactivity and the first woman to win a Nobel Prize.
• Austria
• Austria has produced renowned scientists like Erwin Schrödinger, one of the fathers of quantum mechanics, known for his Schrödinger equation and thought experiment "Schrödinger's cat."
• Gregor Mendel, an Austrian scientist, is known as the "Father of Genetics" for his groundbreaking experiments on pea plants that laid the foundation for modern genetics.
• Atomic Theory
• John Dalton's atomic theory proposed that atoms are indivisible particles, each element is made of identical atoms, and chemical reactions involve the rearrangement of these atoms.
• Modern atomic theory has refined Dalton's ideas, incorporating concepts like subatomic particles (protons, neutrons, and electrons) and quantum mechanics.

The correct answer is France.

Key Points

• Strasbourg is located in the eastern part of France, near its border with Germany, in the historical region of Alsace.
• It is renowned as the official seat of the European Parliament, one of the key institutions of the European Union (EU).
• The city hosts important European institutions like the European Court of Human Rights and the Council of Europe.
• Strasbourg is famous for its architectural landmarks such as the Strasbourg Cathedral, a Gothic masterpiece that dates back to 1015.
• The city embodies a mix of French and German heritage due to its strategic geographical location and history.

Additional Information

• Austria:
• Austria is a landlocked country in Central Europe, known for its cultural heritage, music, and alpine landscapes.
• Vienna, the capital city, is famous for being a center of classical music and home to composers like Mozart and Beethoven.
• Austria is not the seat of the European Parliament but is a member of the European Union.
• Switzerland:
• Switzerland is a landlocked country in Europe known for its neutrality, banking sector, and beautiful mountainous regions like the Alps.
• It is not a member of the European Union and does not host the European Parliament.
• Important international organizations like the World Health Organization (WHO) and the International Red Cross are headquartered in Geneva, Switzerland.
• Belgium:
• Belgium is a founding member of the European Union and is home to Brussels, the de facto capital of the EU.
• Brussels hosts key EU institutions, including the European Commission and the European Council, but it is not the seat of the European Parliament.
• The city of Bruges, known for its medieval architecture, attracts millions of tourists annually.

The correct answer is Skin.

Key Points

• Leucoderma, also known as vitiligo, is a skin condition characterized by the loss of pigmentation, leading to white patches appearing on the skin.
• The condition occurs due to the destruction or malfunction of melanocytes, the cells responsible for producing melanin (pigment that gives skin its color).
• Leucoderma does not cause physical pain but can lead to psychological distress due to its visible nature.
• The exact cause of leucoderma is not fully understood; however, it is believed to be linked to autoimmune disorders where the body attacks its own melanocytes.
• Treatment options include topical creams, light therapies, and in some cases, surgical procedures like skin grafting or melanocyte transplants.

Additional Information

• Blood:
• Blood is the fluid in the circulatory system that carries oxygen, nutrients, and waste products to and from cells in the body.
• Common conditions related to blood include anemia, leukemia, and clotting disorders like hemophilia.
• Leucoderma does not affect the blood as it is primarily a skin-related disorder.
• Nervous System:
• The nervous system is responsible for coordinating and controlling body activities through nerve signals.
• Diseases affecting the nervous system include Parkinson’s disease, epilepsy, and multiple sclerosis.
• Leucoderma does not interfere with the functioning of the nervous system.
• Heart:
• The heart is a muscular organ responsible for pumping blood throughout the body via the circulatory system.
• Heart-related conditions include coronary artery disease, arrhythmia, and heart attacks.
• Leucoderma does not have any direct impact on the heart or its functioning.

The correct answer is Vehicles weighing more than 5 tonnes should not use the road.

Key Points

• The road sign "5T" indicates that vehicles weighing more than 5 tonnes are prohibited from using the road.
• It is a mandatory road sign as per the traffic regulations in India.
• This restriction ensures that roads not designed to handle heavy loads are protected from damage.
• The sign is commonly found near bridges, narrow roads, or areas with weak road infrastructure.
• Violating this restriction can result in fines or penalties as per the Motor Vehicles Act.

Additional Information

• Importance of Road Signs
• Road signs are critical for maintaining safety and order on roads. They provide essential information to drivers and other road users.
• Mandatory signs, like the "5T" sign, are enforceable by law and must be adhered to ensure smooth traffic flow and infrastructure preservation.
• Other categories of road signs include cautionary signs (e.g., sharp turn ahead) and informatory signs (e.g., hospital ahead).

The correct answer is Sarod.

Key Points

• The Sarod is a stringed musical instrument used in Indian classical music and is known for its deep, resonant sound.
• Unlike woodwind instruments, the Sarod is a plucked lute and does not involve blowing air to produce sound.
• It has a fretless metal fingerboard, allowing artists to play sliding notes (meend) typical of Indian classical music.
• The Sarod’s body is made of wood, but it is not classified as a woodwind instrument as it does not require air to generate sound.
• It is traditionally associated with North Indian (Hindustani) classical music and is considered one of the most prominent stringed instruments in Indian music.

Additional Information

• Flute
• The flute is a woodwind instrument that produces sound when air is directed across the edge of an opening, causing the air within the tube to vibrate.
• It is one of the oldest musical instruments, made traditionally from wood, bamboo, or metal.
• The modern concert flute is typically made of metal but is still classified as a woodwind instrument due to its history and playing technique.
• Flutes are commonly used in various musical genres, including classical, jazz, and traditional music worldwide.
• Clarinet
• The clarinet is a single-reed woodwind instrument with a cylindrical bore and is commonly made of wood or plastic.
• It produces sound by vibrating a single reed attached to its mouthpiece when air is blown into it.
• Clarinets are versatile instruments used in classical orchestras, jazz ensembles, and various folk music traditions.
• Its range and unique tone make it a popular choice for both solo and ensemble performances.
• Oboe
• The oboe is a double-reed woodwind instrument known for its distinctively piercing and expressive sound.
• It is used extensively in classical and chamber music and often plays the role of carrying the main melody in orchestral compositions.
• Players produce sound by blowing air through the double reed, causing it to vibrate and generate musical tones.
• The oboe is traditionally made of wood, which contributes to its warm, rich sound.

The correct answer is Reckitt Benckiser Group.

Key Points

• Dettol is owned by Reckitt Benckiser Group, a British multinational consumer goods company headquartered in Slough, England.
• Reckitt Benckiser specializes in health, hygiene, and home products, and Dettol is one of its most popular and trusted brands globally.
• Dettol was first introduced in the 1930s as an antiseptic liquid to prevent infections during surgeries and childbirth.
• The brand has expanded its product range, including soaps, handwash, disinfectants, and surface cleaners, maintaining its reputation for germ protection.
• Reckitt Benckiser operates in over 190 countries and is committed to improving hygiene and health standards worldwide through innovative products.

Additional Information

• Marico Group
• Marico Limited is an Indian multinational consumer goods company headquartered in Mumbai, Maharashtra.
• It specializes in beauty and wellness products, particularly hair care and edible oils.
• Popular brands under Marico include Parachute (hair oil), Saffola (edible oil), and Livon (hair serum).
• Marico does not manufacture antiseptic products like Dettol; its focus is primarily on lifestyle and personal care products.
• ITC Group
• ITC Limited is an Indian conglomerate headquartered in Kolkata, West Bengal.
• The company operates in sectors such as FMCG, hotels, paperboards, packaging, agri-business, and IT.
• Popular products include Aashirvaad atta, Sunfeast biscuits, and Fiama personal care products.
• ITC does not own Dettol or produce antiseptic solutions.
• Jyothi Laboratories
• Jyothi Laboratories is an Indian company specializing in home care and personal care products.
• Its popular brands include Ujala (fabric whitener), Exo (dishwashing products), and Maxo (mosquito repellents).
• It does not manufacture antiseptic or healthcare products like Dettol.

The correct answer is Sunday.

Key Points

• The Christian festival of Easter always falls on a Sunday.
• Easter Sunday commemorates the resurrection of Jesus Christ from the dead, as described in the New Testament of the Bible.
• The date of Easter Sunday varies each year as it is observed on the first Sunday following the first full moon after the vernal equinox (March 21).
• This method of calculating Easter was established by the First Council of Nicaea in 325 AD.
• Easter Sunday is the culmination of the Holy Week, which begins with Palm Sunday and includes Good Friday, marking the crucifixion of Jesus.

Additional Information

• Wednesday
• Wednesday is known as Spy Wednesday during Holy Week in Christian tradition, commemorating Judas Iscariot's betrayal of Jesus to the religious authorities.
• However, Easter Sunday never falls on a Wednesday.
• Friday
• Good Friday, which precedes Easter Sunday, marks the day of Jesus Christ's crucifixion and death.
• It is observed as a solemn day of mourning in Christianity.
• While Good Friday is an integral part of Easter celebrations, it is not the day of the resurrection.
• Thursday
• Maundy Thursday, also known as Holy Thursday, is observed during Holy Week to commemorate the Last Supper of Jesus Christ with his disciples.
• This day also signifies the institution of the Eucharist (Holy Communion) by Jesus.
• However, Easter Sunday does not occur on this day.

The correct answer is Schengen Visa.

Key Points

• The Schengen Visa is a short-term visa that allows individuals to travel within 23 European Union (EU) countries and 4 non-EU Schengen Area countries without border checks.
• It is one of the most widely accepted visas in the world, enabling travel to 27 member countries, including popular destinations such as France, Germany, Italy, and Spain.
• The visa is valid for up to 90 days within a 180-day period for purposes such as tourism, business, or family visits.
• Applicants must provide valid travel insurance, proof of accommodation, financial means, and a clear travel itinerary to obtain a Schengen Visa.
• The Schengen Agreement, signed in 1985, aims to abolish internal border controls among its member countries, promoting seamless travel and strengthening cooperation.

Additional Information

• No visa officially named "Europe Visa", "Baltic Visa" , "Euro Visa" exists.
• Schengen Area
• The Schengen Area is a group of European countries that have abolished border controls at mutual borders, functioning as a single jurisdiction for international travel purposes.
• Countries outside the Schengen Area, such as the UK and Ireland, have their own visa policies and are not part of this agreement.
• The primary objective of the Schengen Agreement is to enhance freedom of movement, simplify travel, and foster unity among European nations.

The correct answer is Eastern India.

Key Points

• The Ahom Kingdom was established in the 13th century in the Brahmaputra Valley of Assam, located in Eastern India.
• It was founded by Sukaphaa, a Tai prince, in 1228 AD after his migration from present-day Yunnan Province (China).
• The Ahom rulers successfully unified smaller tribes and kingdoms under their administration, contributing to the cultural and political consolidation of Assam.
• The kingdom played a significant role in resisting Mughal expansion in the region, most notably in the Battle of Saraighat (1671), where the Ahoms under Lachit Borphukan defeated the Mughal forces.
• The Ahom Dynasty ruled for nearly 600 years, leaving a lasting legacy in the region, particularly in terms of culture, language, and governance systems.

Additional Information

• Southern India:
• Southern India was home to several prominent kingdoms during the medieval period, including the Chola, Chera, Pandya, and Vijayanagara Empires.
• The Chola Empire (9th–13th centuries) is particularly noted for its naval strength, temple architecture, and administrative systems.
• The Vijayanagara Empire (14th–17th centuries) played a key role in resisting invasions by the Delhi Sultanate and promoting Hindu culture.
• Northern India:
• Northern India during the 13th century saw the establishment of the Delhi Sultanate by the Ghurid forces, marking the beginning of Islamic rule in the region.
• The region was politically fragmented before the rise of the Sultanate, with Rajput kingdoms like Mewar and Kannauj holding significant influence.
• Western India:
• Western India during this period was dominated by the Rajput kingdoms and smaller states such as the Gujarat Sultanate.
• The region was a hub of trade and commerce, with ports like Khambhat facilitating international trade.

The correct answer is 1993.

Key Points

• The Latur earthquake occurred on September 30, 1993, in the state of Maharashtra, India.
• It measured a magnitude of 6.2 on the Richter scale and caused severe damage to the Killari and surrounding villages.
• The epicenter of the earthquake was near Killari village in Latur District, and it was classified as an intraplate earthquake—unusual for the region.
• Approximately 10,000 people lost their lives, and thousands were injured, making it one of the deadliest earthquakes in Indian history.
• The earthquake highlighted the need for improved disaster preparedness and the importance of seismological studies in regions previously considered low-risk.

Additional Information

• 1989:
• The year 1989 witnessed the Loma Prieta earthquake in California, USA, which occurred on October 17, 1989.
• It had a magnitude of 6.9 and caused significant damage in the San Francisco Bay Area, including the collapse of a section of the Bay Bridge.
• This earthquake is unrelated to the seismic activity in India.
• 1999:
• India experienced the Chamoli earthquake in Uttarakhand on March 29, 1999, with a magnitude of 6.8.
• It caused significant destruction and loss of lives in the Himalayan region but occurred six years after the Latur earthquake.
• Additionally, Turkey experienced the Izmit earthquake in 1999, which killed thousands.
• 2004:
• On December 26, 2004, a massive undersea earthquake near Sumatra triggered the Indian Ocean tsunami, which affected multiple countries, including India.
• The earthquake had a magnitude of 9.1–9.3, making it one of the strongest ever recorded.
• This event was unrelated to the Latur earthquake, which occurred over a decade earlier.

The correct answer is Lithium.

Key Points

• The Salar de Uyuni salt flats, located in Bolivia, contain the largest known reserves of lithium, estimated to house nearly 50-70% of the world’s total lithium reserves.
• Lithium is a critical element used in the manufacturing of rechargeable batteries for electric vehicles (EVs), smartphones, laptops, and other electronic devices.
• Bolivia's lithium reserves are primarily found in the brine beneath the salt flats, which are extracted and processed for industrial use.
• The increasing demand for lithium is driven by the global shift towards renewable energy and the electrification of the automobile industry.
• Due to its vast reserves, Bolivia is often referred to as part of the "Lithium Triangle," along with Argentina and Chile, which together dominate global lithium production.

Additional Information

• Thorium
• Thorium is a radioactive element primarily used as a nuclear fuel in experimental reactors.
• It is abundant in the Earth's crust and has potential as an alternative to uranium in nuclear energy production.
• India has large reserves of thorium, but its commercial use is still in developmental stages.
• Silver
• Silver is a precious metal extensively used in jewelry, industrial applications, and electronics due to its excellent conductivity.
• Major producers of silver include Mexico, Peru, and China, but Bolivia also has significant silver reserves, though not as abundant as lithium.
• Uranium
• Uranium is a heavy metal used as a primary fuel for nuclear power plants and weapons.
• Significant uranium deposits are found in countries like Kazakhstan, Canada, and Australia.
• Bolivia is not a major producer or reserve holder of uranium.

Important Points

• Bolivia’s Salar de Uyuni
• It is the largest salt flat in the world, spanning over 10,000 square kilometers.
• Besides lithium, the region is a significant tourist destination due to its stunning landscapes and unique salt formations.

The correct answer is Saudi Arabia.

Key Points

• SGS1 (Saudi Geostationary Satellite 1) is a geostationary communications satellite that belongs to Saudi Arabia.
• The satellite was developed by the King Abdulaziz City for Science and Technology (KACST) in collaboration with Lockheed Martin, a US aerospace company.
• The satellite was launched on February 5, 2019, from the Guiana Space Center in French Guiana using an Ariane 5 rocket.
• SGS1 is designed to enhance telecommunications, internet connectivity, and secure satellite communications for Saudi Arabia and neighboring regions.
• The satellite is part of Saudi Arabia’s Vision 2030 initiative, which aims to diversify its economy and develop technological capabilities in the space sector.

Additional Information

• Singapore:
• Singapore has advanced technological capabilities in satellite research and development, primarily focused on small satellites and space applications.
• It launched its first satellite, X-SAT, in 2011, developed by Nanyang Technological University (NTU).
• Singapore Space and Technology Ltd (SSTL) is actively involved in fostering the country's space industry.
• South Africa:
• South Africa’s space program is spearheaded by the South African National Space Agency (SANSA).
• The country focuses on Earth observation, space science, and satellite technology.
• South Africa launched its first indigenous satellite, SunSat, in 1999, and later developed ZA-Cube nanosatellites.
• South Korea:
• South Korea has an advanced space program led by the Korea Aerospace Research Institute (KARI).
• It successfully launched its first indigenous satellite, KITSAT-1, in 1992.
• The country has developed several satellites for communications, Earth observation, and scientific research, including the Arirang series.
• South Korea is also working on developing its own launch vehicles, such as the KSLV-II Nuri, to boost its space exploration capabilities.

The correct answer is Hoshangabad, Madhya Pradesh.

Key Points

• The Security Paper Mill (SPM) is located in Hoshangabad, Madhya Pradesh.
• It was established in 1968 and is one of the key units under the Security Printing and Minting Corporation of India Limited (SPMCIL).
• The mill manufactures high-quality security paper used for printing currency notes and other government documents such as passports.
• SPM Hoshangabad ensures the production of security paper with advanced anti-counterfeiting features, contributing to the integrity of India's financial systems.
• It plays a vital role in producing paper for printing Indian Rupee notes, particularly for denominations like ₹10, ₹20, ₹50, ₹100, ₹200, ₹500, and ₹2000.

Additional Information

• Nashik, Maharashtra:
• Nashik houses one of the India Security Press (ISP), another unit under SPMCIL.
• The ISP is responsible for printing non-judicial stamps, postal stamps, and other security products.
• Dewas, Madhya Pradesh:
• Dewas has the Bank Note Press (BNP), which is a major facility for printing Indian currency notes.
• Kolkata, West Bengal:
• Kolkata is home to the India Government Mint, which is responsible for coin production, medals, and other metallic items.

Important Points

• Security Printing and Minting Corporation of India Limited (SPMCIL):
• SPMCIL is a government-owned corporation that was established in 2006.
• It manages nine production units, including four mints, two banknote presses, two security presses, and one security paper mill.
• Its primary goal is to produce banknotes, coins, passports, and other security documents required by the Government of India.

The correct answer is Pune.

Key Points

• The Bombay High Court has its principal seat in Mumbai, Maharashtra, and three additional bench courts.
• The three bench courts of the Bombay High Court are located in Nagpur, Aurangabad, and Panaji (Goa).
• Pune does not have a bench of the Bombay High Court, making it the correct answer to the question.
• The Nagpur Bench was established in 1936, Aurangabad Bench in 1984, and the Panaji (Goa) Bench was established in 1982.
• These benches were established to cater to the legal needs of people in different regions and to reduce the burden on the principal seat in Mumbai.

Additional Information

• Nagpur Bench:
• Located in Vidarbha region of Maharashtra, the Nagpur Bench serves the eastern part of the state.
• It was established in 1936 and caters to legal cases from districts like Nagpur, Akola, Amravati, and others.
• Aurangabad Bench:
• Located in Marathwada region of Maharashtra, the Aurangabad Bench was established in 1984.
• It serves districts like Aurangabad, Jalna, Beed, and Nanded.
• Panaji Bench:
• The Panaji Bench serves the Union Territory of Goa, Daman, and Diu.
• It was established in 1982 and handles legal matters specific to the region.
• Bombay High Court:
• Established in 1862, it is one of the oldest High Courts in India.
• It has jurisdiction over Maharashtra, Goa, and the Union Territories of Daman and Diu, and Dadra and Nagar Haveli.

The correct answer is Dehradun.

Key Points

• The Forest Research Institute (FRI) is located in Dehradun, Uttarakhand, and is renowned as a premier institution in the field of forestry research in India.
• It was originally established in 1878 as the British Imperial Forest School and later transformed into the Forest Research Institute in 1906.
• The FRI campus is spread across 450 hectares and is noted for its colonial and Greco-Roman architectural style, housing one of the world’s largest forestry libraries.
• The institute operates under the aegis of the Indian Council of Forestry Research and Education (ICFRE), which functions under the Ministry of Environment, Forest, and Climate Change.
• The FRI is not only a center for forestry research but also a popular tourist destination, owing to its stunning architecture and serene surroundings.

Additional Information

• Nainital:
• Nainital is a popular hill station in Uttarakhand, known for its picturesque lakes and scenic beauty.
• It is also home to the Aryabhatta Research Institute of Observational Sciences (ARIES), a prominent astronomical observatory in India.
• Rishikesh:
• Rishikesh, also located in Uttarakhand, is known as the ‘Yoga Capital of the World’ and is a hub for spiritual and adventure tourism.
• The town is situated on the banks of the Ganges River and serves as a gateway to the Himalayas.
• Darjeeling:
• Darjeeling is a town in West Bengal, famous for its tea gardens, scenic landscapes, and the Darjeeling Himalayan Railway, a UNESCO World Heritage site.
• It is also known for its biodiversity and is home to the Padmaja Naidu Himalayan Zoological Park and the Himalayan Mountaineering Institute.

The correct answer is V.O. Chidambaram Pillai.

Key Points

• V.O. Chidambaram Pillai, popularly known as "Kappalottiya Tamilan," was a prominent freedom fighter and visionary from Tamil Nadu.
• He founded the Swadeshi Steam Navigation Company in 1906 to challenge the British monopoly in the shipping industry and promote indigenous enterprise.
• His company operated two steamships, S.S. Gallia and S.S. Lawoe, between Tuticorin (India) and Colombo (Sri Lanka), providing an alternative to the British shipping services.
• Chidambaram Pillai was an ardent supporter of the Swadeshi Movement and encouraged the use of indigenous goods and services to oppose British colonial rule.
• He faced severe repression from the British government for his nationalist activities, including imprisonment and confiscation of his property.

Additional Information

• Subramaniya Siva
• Subramaniya Siva was a Tamil writer, poet, and freedom fighter known for his contributions to the Indian independence movement.
• He worked closely with V.O. Chidambaram Pillai and Subramania Bharati during the Swadeshi Movement.
• Siva was imprisoned multiple times for his nationalist activities and for inspiring people to join the freedom struggle through his speeches and writings.
• Dheeran Chinnamalai
• Dheeran Chinnamalai was a Tamil chieftain and warrior who fought against the British East India Company during the Polygar Wars.
• He supported Tipu Sultan in his fight against the British and resisted British authority in the Kongu region.
• Chinnamalai was eventually captured by the British and executed in 1805.
• Veerapandiya Kattabomman
• Veerapandiya Kattabomman was a prominent chieftain and freedom fighter from Tamil Nadu who opposed the British East India Company in the late 18th century.
• He is best known for his defiance of British demands for tribute and his efforts to protect the sovereignty of his region.
• Kattabomman was captured by the British with the help of local allies and was hanged in 1799.
• Swadeshi Movement
• The Swadeshi Movement was a major part of the Indian freedom struggle, aimed at promoting indigenous industries and boycotting British goods.
• The movement gained momentum during the partition of Bengal in 1905 and inspired leaders like V.O. Chidambaram Pillai to establish indigenous businesses.
• It played a crucial role in fostering a sense of nationalism and economic independence among Indians.

The correct answer is Union Budget 2017-18.

Key Points

• Electoral bonds were introduced in Union Budget 2017-18 by the then Finance Minister Arun Jaitley.
• Electoral bonds were proposed as a measure to bring transparency in funding to political parties.
• These bonds are financial instruments that allow individuals, organizations, or companies to donate funds to political parties anonymously.
• The scheme was launched on January 2, 2018, and is operated by the State Bank of India (SBI).
• Electoral bonds can be purchased in denominations ranging from Rs. 1,000 to Rs. 1 crore and are valid for 15 days from the date of issuance.

Additional Information

• Union Budget 2018-19:
• Presented by Finance Minister Arun Jaitley, this budget focused on agriculture, rural development, healthcare, and infrastructure.
• It introduced the flagship health insurance scheme Ayushman Bharat, also known as the National Health Protection Scheme, which provides health coverage of Rs. 5 lakh per family annually.
• The budget also emphasized increasing the minimum support price (MSP) for crops and improving rural employment.
• Union Budget 2015-16:
• Presented by Finance Minister Arun Jaitley, this budget aimed to achieve fiscal consolidation and boost economic growth.
• It introduced the Pradhan Mantri Jeevan Jyoti Bima Yojana (PMJJBY) and Pradhan Mantri Suraksha Bima Yojana (PMSBY), which are insurance schemes for life and accidental coverage.
• It also proposed the creation of a Micro Units Development and Refinance Agency (MUDRA Bank) to help microfinance institutions and small businesses.
• Union Budget 2016-17:
• This budget was presented by Finance Minister Arun Jaitley and focused on rural development, infrastructure, and fiscal discipline.
• It announced the Digital Literacy Mission for rural areas and aimed to cover 6 crore households within the next three years.
• Other measures included increased allocation to the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA) and initiatives for farmers’ welfare.

Important Points

• Electoral Bonds:
• The electoral bond scheme seeks to address issues of opaque political funding and reduce reliance on cash donations.
• Political parties registered under Section 29A of the Representation of the People Act, 1951, and securing at least 1% of votes in the last election are eligible to receive donations through electoral bonds.
• While the scheme aims to enhance transparency, it has also been criticized for allowing anonymity in donations and raising concerns about potential misuse.

The correct answer is Study of gases.

Key Points

• Boyle's Law states that the pressure of a given mass of gas is inversely proportional to its volume when temperature is kept constant.
• Charles' Law explains that the volume of a gas is directly proportional to its absolute temperature when pressure remains constant.
• Gay-Lussac's Law describes that the pressure of a gas is directly proportional to its absolute temperature when the volume remains constant.
• These laws collectively form the foundation of the study of gases and are critical in understanding gas behavior under different conditions.
• The study of gases falls under the branch of physics known as thermodynamics, which deals with heat, energy, and work.

Additional Information

• The study of radioactivity
• Radioactivity refers to the spontaneous emission of particles or electromagnetic radiation from unstable atomic nuclei.
• The study of radioactivity is fundamental in nuclear physics and has applications in medicine, energy production, and radiometric dating.
• Key discoveries include the work of Henri Becquerel, Marie Curie, and Ernest Rutherford.
• Study of light
• The study of light falls under optics, which is a branch of physics that deals with the behavior and properties of light, including its interaction with matter.
• Important principles include reflection, refraction, diffraction, and polarization.
• Applications range from designing lenses and microscopes to understanding quantum mechanics and the electromagnetic spectrum.
• Study of atoms
• Atomic physics focuses on the structure and behavior of atoms, including their electrons, nuclei, and energy levels.
• It is closely related to quantum mechanics and plays a key role in understanding chemical bonding, spectroscopy, and the periodic table.
• Significant contributions include Niels Bohr's atomic model and Schrödinger's wave equation.

The correct answer is Yellow.

Key Points

• In India, school buses are painted yellow as per the prescribed safety norms and guidelines under the Central Motor Vehicles Rules, 1989.
• The color yellow is highly visible during both day and night, ensuring the safety of school children by making the buses easily noticeable in traffic.
• The use of yellow for school buses follows international conventions, as yellow is associated with caution and is widely recognized for its visibility and safety.
• Section 100 of the Central Motor Vehicles Rules also mandates that the words "School Bus" should be prominently written on the front and back of the vehicle.
• School buses in India are also required to have specific safety features, including speed governors, grills on windows, and emergency exit doors, to ensure maximum safety for students.

Additional Information

• Green:
• Green is often associated with environmental sustainability and ecological balance.
• In India, green is used for certain license plates, such as those for electric vehicles, to promote eco-friendly transportation.
• However, it is not used for school buses as it lacks the high visibility required for safety purposes.
• Red:
• Red is a color commonly associated with danger, warnings, and stop signals.
• In transportation, red is used for emergency vehicles like fire engines and ambulances because it attracts immediate attention.
• Red is not suitable for school buses as it does not align with international conventions for school bus color coding.
• Blue:
• Blue is often used for public transport vehicles, police vehicles, or certain types of government transport in India.
• While blue is a calming color, it is not as visible as yellow in traffic, making it unsuitable for school buses.

The correct answer is Ecuador.

Key Points

• WikiLeaks founder Julian Assange was arrested on April 11, 2019, from the Ecuadorian Embassy in London.
• He had taken asylum in the embassy in June 2012 to avoid extradition to Sweden, where he faced allegations of sexual misconduct.
• Assange's asylum was revoked by Ecuador's President Lenín Moreno, citing violations of international conventions and the embassy's protocols.
• Following Ecuador’s decision to withdraw asylum, the UK Metropolitan Police entered the embassy and arrested Assange for breaching his bail conditions.
• Julian Assange is also sought by the United States on charges related to the publication of classified government documents by WikiLeaks.

Additional Information

• Bolivia
• Bolivia is located in South America and has no involvement in Julian Assange's case or his asylum.
• The country is known for its political history and its current focus on indigenous rights and natural resource management.
• Colombia
• Colombia, another South American country, has no connection to Assange or the WikiLeaks case.
• It is better known for its efforts in combating organized crime, drug trafficking, and its peace process after decades of internal conflict.
• Venezuela
• Venezuela, a South American nation, is not related to Assange's asylum or his arrest in the Ecuadorian Embassy.
• The country has been in the news for its political and economic crises, with significant global attention on its leadership and humanitarian challenges.

Important Points

• Asylum and WikiLeaks
• Julian Assange founded WikiLeaks in 2006, which gained global attention for releasing classified documents, including those related to the US military and diplomatic activities.
• Assange sought asylum in Ecuador's embassy in 2012 to avoid extradition to Sweden and potential onward extradition to the United States.
• Asylum is a form of protection granted by a country to individuals fleeing persecution or legal risks in their home country.

The correct answer is Geneva.

Key Points

• The United Nations Conference on Trade and Development (UNCTAD) was established in 1964 as a permanent intergovernmental body under the United Nations.
• Geneva, Switzerland, serves as the headquarters of UNCTAD, making it a central hub for global trade and development discussions.
• UNCTAD focuses on promoting sustainable trade, investment, and development, with the goal of reducing inequalities and fostering economic growth in developing countries.
• The organization plays a pivotal role in assisting developing nations to integrate into the global economy by providing analysis, policy advice, and capacity-building support.
• UNCTAD also publishes the widely recognized World Investment Report and Trade and Development Report, which offer insights into global trade and investment trends.

Additional Information

• Brussels:
• Brussels is the de facto capital of the European Union (EU) and houses numerous EU institutions, including the European Commission and the European Council.
• It is also the headquarters for NATO (North Atlantic Treaty Organization).
• While Brussels is a major political and administrative center, it is not associated with UNCTAD.
• New York:
• New York City is home to the headquarters of the United Nations (UN), established in 1945.
• It hosts important UN organs such as the General Assembly and the Security Council.
• Although New York is a prominent location for UN activities, UNCTAD is headquartered in Geneva.
• Paris:
• Paris is the headquarters of the United Nations Educational, Scientific and Cultural Organization (UNESCO).
• It is also home to the Organisation for Economic Co-operation and Development (OECD), which focuses on fostering economic progress and world trade.

The correct answer is Singapore.

Key Points

• BOLD KURUKSHETRA 2019 is a joint military exercise conducted between the Indian Army and the Singapore Armed Forces (SAF).
• This exercise was held in April 2019 at Babina Military Station in Jhansi, Uttar Pradesh.
• The exercise focused on joint training in mechanized warfare to enhance mutual cooperation and build interoperability between the two nations.
• It marked the 10th edition of the bilateral exercise that has been conducted under the India-Singapore Defence Cooperation Agreement signed in 2003.
• The exercise included various activities such as joint tactical planning, training on combat drills, and sharing best practices in military operations.

Additional Information

• Russia
• India and Russia conduct a major bilateral military exercise called INDRA, which involves the Army, Navy, and Air Force of both countries.
• The INDRA exercise was first conducted in 2003 and aims to strengthen strategic partnership and cooperation in defense.
• Iran
• India and Iran cooperate in defense, but they do not have any notable regular joint military exercises.
• Most of the cooperation between the two countries is focused on the development of strategic infrastructure like the Chabahar Port.
• Israel
• India and Israel share strong defense ties, but the focus is primarily on defense technology and intelligence sharing rather than large-scale joint military exercises.
• India is one of the largest buyers of Israeli defense equipment, including drones and missile systems.

The correct answer is Event Horizon Telescope.

Key Points

• The Event Horizon Telescope (EHT) is a global network of radio telescopes designed to capture high-resolution images of black holes.
• On April 10, 2019, the EHT collaboration released the first-ever direct image of a black hole, located at the center of the M87 galaxy, approximately 55 million light-years away.
• The telescope uses the technique of Very Long Baseline Interferometry (VLBI), which synchronizes observations from multiple radio observatories around the world to simulate a virtual telescope the size of Earth.
• The EHT focuses on studying supermassive black holes, including Sagittarius A*, the black hole at the center of our Milky Way galaxy.
• This groundbreaking achievement provides insights into the behavior of black holes, their event horizons, and the surrounding accretion disks, enhancing our understanding of general relativity and astrophysics.

Additional Information

• Hubble Space Telescope:
• The Hubble Space Telescope is a large, space-based observatory launched in 1990 by NASA and ESA.
• It operates primarily in visible, ultraviolet, and near-infrared wavelengths, capturing high-resolution images of distant galaxies, nebulae, and other celestial objects.
• Hubble has contributed significantly to our understanding of the universe, including confirming the existence of dark energy and determining the age of the universe.
• It is not specifically designed for imaging black holes but has provided indirect evidence through observations of their effects on surrounding matter.
• Keck Observatory Telescope:
• The Keck Observatory, located in Hawaii, houses two 10-meter optical/infrared telescopes.
• It is renowned for its adaptive optics system, which corrects atmospheric distortions to produce clearer images.
• The Keck telescopes have been instrumental in observing exoplanets, distant galaxies, and supermassive black holes.
• Although capable of studying black holes, they do not specialize in producing direct images like the Event Horizon Telescope.
• Spitzer Space Telescope:
• The Spitzer Space Telescope was an infrared observatory launched by NASA in 2003 and retired in 2020.
• It specialized in studying cooler celestial objects such as exoplanets, star-forming regions, and distant galaxies.
• While the Spitzer Telescope contributed to the study of black holes indirectly, it did not produce direct images of them.

The correct answer is Milton Friedman.

Key Points

• Milton Friedman was an American economist who is considered the leading advocate of monetarism in the 20th century.
• He argued that monetary policy (control of the money supply) is more effective than fiscal policy in managing economic stability.
• Friedman developed the quantity theory of money, which emphasizes the relationship between money supply and price levels.
• He believed that inflation is always a monetary phenomenon and that controlling money supply growth is essential for reducing inflation.
• Friedman’s most notable works include his book “A Monetary History of the United States” (co-authored with Anna Schwartz), which profoundly influenced modern economic thought.

Additional Information

• Joseph Stiglitz
• Joseph Stiglitz is a Nobel Prize-winning economist known for his work on information asymmetry and market imperfections.
• He has criticized free-market policies and has written extensively on income inequality and the role of government in the economy.
• Stiglitz served as the Chief Economist of the World Bank and authored books such as “Globalization and Its Discontents.”
• John Maynard Keynes
• Keynes was a British economist who founded Keynesian economics, which emphasizes the role of government intervention in stabilizing the economy.
• His seminal work, “The General Theory of Employment, Interest, and Money,” laid the foundation for modern macroeconomics.
• Keynes advocated for fiscal policies, such as increased government spending, to combat unemployment and economic recessions.
• Adam Smith
• Adam Smith, often referred to as the “Father of Modern Economics,” was an 18th-century Scottish economist and philosopher.
• His book “The Wealth of Nations” introduced the concept of the invisible hand, explaining how self-interest in a free market leads to economic prosperity.
• Smith emphasized the importance of free markets, competition, and limited government intervention in economic activities.

The correct answer is Nagpur.

Key Points

• Nagpur is famous for its 'Diamond Railway Crossing', a unique railway junction where India’s North-South railway line intersects with the East-West railway line.
• This crossing is strategically important as it connects major cities across India, making Nagpur a central hub for Indian Railways.
• The Diamond Railway Crossing is located near Nagpur Junction, which is one of the busiest railway stations in Central India.
• It serves as a vital link for passenger and freight trains, enhancing connectivity and trade efficiency in the region.
• Due to its geographical location, Nagpur is referred to as the 'Zero Mile Center' of India, marking its significance in the country’s transportation network.

Additional Information

• Bhopal
• Bhopal, the capital city of Madhya Pradesh, is known as the City of Lakes due to its numerous natural and artificial lakes.
• It is an important administrative, political, and educational center but is not associated with the Diamond Railway Crossing.
• Bhopal Junction is a major railway station, serving as a critical stop on the Delhi-Chennai and Delhi-Mumbai routes.
• Indore
• Indore is the largest city in Madhya Pradesh and a key industrial and educational hub.
• It is famous for its food culture and historic landmarks but is not connected to the Diamond Railway Crossing.
• Indore Junction is a significant railway station in Western India, connecting to major cities like Mumbai and Delhi.
• Nanded
• Nanded, located in Maharashtra, is known for its spiritual significance as the city houses the Hazur Sahib Gurudwara, an important Sikh pilgrimage site.
• It is not associated with the Diamond Railway Crossing and plays a lesser role in India’s railway network compared to Nagpur.
• Nanded railway station primarily serves regional and pilgrimage traffic.

The correct answer is PAN Card Number.

Key Points

• The GST Identification Number (GSTIN) is a 15-digit alphanumeric code assigned to registered taxpayers under the Goods and Services Tax system in India.
• The first two digits of the GSTIN represent the state code as per the Indian Census 2011.
• The next ten digits of the GSTIN are directly derived from the Permanent Account Number (PAN) of the GST holder, which is issued by the Income Tax Department of India.
• The PAN-based digits in the GSTIN ensure that the GST registration is linked to the taxpayer's identity under the Income Tax framework, facilitating tax compliance.
• The remaining three characters in the GSTIN include a unique entity code, a default character ('Z'), and a checksum digit for verification purposes.

Additional Information

• Mobile Number
• Although a mobile number is often used during the GST registration process for communication and verification, it is not directly embedded into the GSTIN.
• A mobile number is crucial for receiving OTPs and updates related to GST compliance, but it does not form part of the GST identification structure.
• Aadhaar Card Number
• The Aadhaar card is a unique identity document for Indian residents issued by UIDAI.
• GST registration mandates Aadhaar authentication for individuals, proprietors, or authorized signatories, but the Aadhaar number is not replicated in the GSTIN.
• The authentication process ensures that the registration is genuine and linked to the applicant's identity.
• Ration Card Number
• Ration cards are primarily used for food security purposes under the Public Distribution System (PDS) and are unrelated to GST registration or the GSTIN structure.
• Since ration cards serve a different purpose, their number is not used in the GST framework.

The correct answer is Cortes.

Key Points

• The term Cortes refers to the parliamentary assemblies in Spain and Portugal, historically linked to their shared medieval heritage.
• In Spain, the national parliament is called the Cortes Generales, which consists of two chambers: the Congress of Deputies and the Senate.
• In Portugal, Cortes were historically the general assemblies of the kingdom, where representatives of the clergy, nobility, and commoners convened to discuss matters of the state.
• The term originated during the medieval period when such assemblies played a vital role in governance, taxation, and addressing grievances of the subjects.
• These institutions are considered precursors to modern parliamentary systems and highlight the shared governance practices of the Iberian Peninsula.

Additional Information

• Duma
• The Duma refers to the legislative assembly in Russia, particularly the State Duma, which is the lower house of the Federal Assembly of Russia.
• It was first established in 1905 during the reign of Tsar Nicholas II as part of the Russian Empire's attempt at constitutional reform.
• The modern State Duma was re-established in 1993 as part of Russia’s post-Soviet parliamentary structure.
• El Paso
• El Paso is a city located in the state of Texas, United States, and has no relation to parliamentary systems.
• It is known for its location on the U.S.–Mexico border and for being a major cultural and economic hub in the region.
• Caldera
• A caldera is a geological term referring to a large volcanic crater, typically formed by a major eruption that causes the collapse of the volcano’s mouth.
• It is unrelated to parliamentary systems or governance but is significant in the field of earth sciences.

The correct answer is Kochi.

Key Points

• Vypeen Island is located near Kochi, a major port city in the state of Kerala, India.
• The island is situated in the Arabian Sea and is part of the Ernakulam district of Kerala.
• Vypeen Island is connected to Kochi by a series of bridges and ferry services, making it easily accessible.
• Kochi is one of the most important trade and tourism hubs in southern India, and Vypeen Island plays a significant role in its economic activities.
• Vypeen Island is known for its fishing communities, scenic beaches, and historical landmarks like the famous Pallipuram Fort, which is among the oldest European forts in India.

Additional Information

• Calicut (Option 1):
• Calicut, also known as Kozhikode, is a coastal city in Kerala famous for its historical significance as a major trading hub during the medieval period.
• The city is known for the Spice Route and the arrival of Portuguese explorer Vasco da Gama in 1498.
• Mangalore (Option 2):
• Mangalore is a port city located in Karnataka, not Kerala.
• It is famous for its seafood, temples, and beaches but is significantly farther from Vypeen Island compared to Kochi.
• Trivandrum (Option 4):
• Trivandrum, officially known as Thiruvananthapuram, is the capital city of Kerala.
• It is located in the southernmost part of Kerala and is famous for places like Kovalam Beach and the Padmanabhaswamy Temple.

Important Points

• Vypeen Island:
• Vypeen Island is one of the most densely populated islands in Kerala and is known for its strategic location near Kochi.
• The island houses several fishing communities and has developed into a residential and commercial area over the years.
• It is also popular among tourists for its beaches like Cherai Beach and historical sites such as Pallipuram Fort.

The correct answer is Francis Galton.

Key Points

• Francis Galton, a British polymath, is considered the father of eugenics.
• He coined the term "eugenics" in 1883, derived from the Greek words eu (good) and genos (birth).
• Galton's work focused on the hereditary nature of traits and how selective breeding could influence human populations.
• He was a pioneer in studying the relationship between genetics and human abilities and was the first to use statistical methods to study human differences.
• Galton also introduced the concepts of regression and correlation in statistics to analyze hereditary traits.

Additional Information

• David Baltimore
• David Baltimore is an American biologist who received the Nobel Prize in Physiology or Medicine in 1975 for his work on the interaction between tumor viruses and genetic material.
• He is known for discovering reverse transcriptase, an enzyme that transcribes RNA into DNA, which was pivotal in advancing molecular biology.
• His work has no direct connection to the study of eugenics.
• Charles Darwin
• Charles Darwin was a British naturalist best known for his theory of evolution by natural selection, as described in his book On the Origin of Species (1859).
• While Darwin’s work on evolution influenced the development of eugenics, he did not study or promote eugenics himself.
• His theories inspired others, including Francis Galton, who expanded on the idea of heredity in the context of human traits.
• Raymond Dart
• Raymond Dart was an Australian anatomist and anthropologist known for his discovery of the Taung Child, an early hominin fossil belonging to the species Australopithecus africanus.
• His work focused on human evolution and the study of early human ancestors, rather than eugenics.

Important Points

• Eugenics
• Eugenics is the study of how to improve the genetic quality of human populations through selective breeding or other methods.
• It was controversial due to its association with unethical practices, including forced sterilizations and discriminatory policies.
• While modern genetics acknowledges hereditary influences, the concept of eugenics is now largely rejected due to its historical misuse.

The correct answer is Mexico.

Key Points

• Spanish is the official and most widely spoken language in Mexico, and it is spoken by the majority of the population.
• Mexico is home to a rich linguistic diversity, with over 68 recognized indigenous languages, including Nahuatl, Yucatec Maya, and Mixtec.
• The Nahuatl language, spoken by the Aztecs, is still used by over 1.5 million people in modern-day Mexico.
• The Yucatec Maya language is primarily spoken in the Yucatan Peninsula and forms a significant part of the cultural heritage of the Maya civilization.
• The Mixtec language is spoken in the southern regions of Mexico, particularly in Oaxaca, Guerrero, and Puebla, by approximately 500,000 people.
• Mexico is a key hub for indigenous cultures, and its government actively promotes the preservation of these languages through educational and cultural initiatives.

Additional Information

• Chile
• While Spanish is the official language of Chile, the country has a small number of indigenous languages such as Mapudungun, Quechua, and Rapa Nui.
• The Mapudungun language is spoken by the Mapuche people, primarily in the southern regions of Chile and Argentina.
• However, indigenous languages in Chile are not as widely spoken as in Mexico, and Spanish remains overwhelmingly dominant.
• Bolivia
• Bolivia recognizes 37 official languages, including Spanish and numerous indigenous languages like Quechua, Aymara, and Guarani.
• The Quechua language is one of the most spoken indigenous languages in Bolivia, with millions of speakers across the Andean region.
• Aymara, another prominent language, is spoken in the highlands near Lake Titicaca and other regions.
• While Bolivia is linguistically diverse, it does not have the same historical connection to Nahuatl, Yucatec Maya, or Mixtec as Mexico does.
• Argentina
• Spanish is the official and predominant language in Argentina, and it is spoken by nearly the entire population.
• There are some indigenous languages in Argentina, such as Quechua, Guarani, and Mapudungun, but they are not as prominent as in Mexico or Bolivia.
• Argentina does not have a historical or cultural link to the Nahuatl, Yucatec Maya, or Mixtec languages.

The correct answer is Surat.

Key Points

• The Indian Diamond Institute (IDI) is located in Surat, Gujarat, which is known as the diamond capital of India.
• IDI was established in 1978 with the aim of providing specialized education, training, research, and consultancy in the field of diamonds, gems, and jewelry.
• It functions as a center of excellence for the gem and jewelry industry, offering advanced courses and certifications in diamond grading, gemology, jewelry designing, and manufacturing.
• The institute is recognized globally for its contribution to the diamond and jewelry sectors and works closely with the industry to meet the growing demand for skilled professionals.
• Surat is a major hub for diamond cutting and polishing, contributing to about 90% of the world's diamonds, making it the ideal location for the Indian Diamond Institute.

Additional Information

• Bangalore:
• Bangalore, also known as Bengaluru, is the capital of Karnataka and a major center for the IT industry in India.
• The city is referred to as the "Silicon Valley of India" due to its prominence in technology and innovation.
• While Bangalore is home to many educational institutions and research centers, it is not associated with diamond-related industries.
• Vadodara:
• Vadodara, located in Gujarat, is known for its rich cultural heritage and historical significance.
• The city is famous for educational institutions, such as Maharaja Sayajirao University of Baroda, and industries like petrochemicals and engineering.
• However, it does not have a major role in the diamond or jewelry sectors.
• Mumbai:
• Mumbai, the financial capital of India, is a major hub for commerce, trade, and entertainment.
• The city has a significant presence in the diamond trade, with the Bharat Diamond Bourse being located here.
• However, the Indian Diamond Institute is based in Surat, not Mumbai.
• Diamond Industry in India:
• India is one of the largest diamond processing hubs in the world, with Surat being the epicenter of diamond cutting and polishing.
• Diamonds play a crucial role in India's economy, with significant exports to various countries.
• Institutions like IDI contribute to skill development, research, and innovation, ensuring that India remains a global leader in this sector.

The correct answer is Parashu.

Key Points

• Lord Parashurama, the sixth avatar of Lord Vishnu in Hindu mythology, is famously associated with the Parashu (battle axe) as his divine weapon.
• The name "Parashurama" itself means "Rama with an axe," highlighting the significance of this weapon in his identity.
• According to mythology, Kerala was created when Lord Parashurama threw his Parashu into the Arabian Sea, reclaiming land that is now Kerala.
• Lord Parashurama is often depicted holding the Parashu in his hands, symbolizing his immense power, warrior skills, and dedication to dharma (righteousness).
• In Hindu epics and Puranas, Parashurama used the axe to rid the earth of corrupt and oppressive Kshatriyas, thereby establishing justice and restoring balance.

Additional Information

• Mace
• The mace, known as Gada in Sanskrit, is primarily associated with Lord Hanuman and Bhima in Hindu mythology.
• It symbolizes immense strength, power, and authority.
• The Gada is also a weapon of Lord Vishnu in his form as Gadadhara, which means "Bearer of the Mace."
• Sword
• The sword, referred to as Khadga in Sanskrit, is a symbol of valor and dharma in Hindu traditions.
• It is often associated with Goddess Durga, who wields it to destroy evil forces.
• In mythology, swords are viewed as tools for upholding righteousness and protecting the innocent.
• Bow and Arrow
• The bow and arrow are iconic weapons of several mythological figures, most notably Lord Rama and Arjuna.
• Lord Rama, the seventh avatar of Vishnu, is often depicted with his bow, Kodanda, symbolizing his role as a protector of dharma.
• Arjuna, one of the Pandavas in the Mahabharata, used the bow Gandiva, which was gifted to him by the gods.

The correct answer is 1972.

Key Points

• The Postal Index Number (PIN) or PIN Code system was introduced in India on 15 August 1972 by the India Post.
• The system was introduced by Shriram Bhikaji Velankar, then Additional Secretary in the Union Ministry of Communications.
• The PIN Code is a 6-digit numbering system used for uniquely identifying postal regions and facilitating efficient mail delivery.
• India has been divided into 9 PIN zones, including one functional zone for the Indian Army (Zone 9).
• The first digit of the PIN represents the region, the second digit represents the sub-region, the third digit represents the sorting district, and the last three digits indicate the specific post office.

Additional Information

• PIN Code System
• The PIN Code system is essential for the accurate and efficient delivery of mail across India, which has one of the largest postal networks in the world.
• India Post handles millions of letters and parcels daily, and the PIN Code system plays a crucial role in sorting and routing these items to their destinations.
• The introduction of the PIN Code system improved the reliability and speed of postal services in India.

The correct answer is Mon Apr 07 2025 00:00:00 GMT+0530 (India Standard Time).

Key Points

• World Health Day is celebrated every year on 7th April, which marks the founding of the World Health Organization (WHO) in 1948.
• The primary aim of World Health Day is to raise awareness about global health issues and encourage collective action to address them.
• Each year, WHO selects a specific theme for World Health Day to highlight a priority area of public health concern. Themes in the past have included topics such as universal health coverage, mental health, and environmental health.
• World Health Day is observed globally with events such as health fairs, workshops, and discussions to promote better health and well-being.
• In 2025, World Health Day will be celebrated on Monday, 7th April, continuing its mission to promote health equity and sustainable development worldwide.

Additional Information

• World Health Organization (WHO):
• WHO is a specialized agency of the United Nations responsible for international public health.
• Established on April 7, 1948, the organization works towards achieving universal health coverage, preventing diseases, and promoting mental and physical well-being globally.
• WHO plays a pivotal role in coordinating international responses to health emergencies such as pandemics.

The correct answer is New York.

Key Points

• Broadway is an iconic avenue located in Manhattan, New York City, and is globally recognized as the hub of American theater and performing arts.
• Broadway theaters are renowned for their high-quality stage productions, including musicals, plays, and other live performances.
• It encompasses a total of 41 professional theaters, each with a seating capacity of 500 or more, making it one of the most prestigious locations for theatrical performances.
• The Broadway district significantly contributes to New York City’s cultural and economic landscape, attracting millions of tourists annually.
• Popular Broadway shows such as "The Phantom of the Opera," "Hamilton," and "The Lion King" have gained international acclaim and have set benchmarks in the entertainment industry.

Additional Information

• Paris
• Paris is widely recognized as the cultural capital of France and is famous for its art, architecture, and history.
• It is home to the iconic Palais Garnier Opera House, which hosts ballet and opera performances.
• The city is also known for theaters like Théâtre des Champs-Élysées and Théâtre de la Ville, which showcase a range of performances from classical to contemporary art forms.
• London
• London is the cultural hub of the United Kingdom and is renowned for its West End theater district, similar to Broadway in New York City.
• The West End features numerous iconic theaters, such as the Royal Opera House and the National Theatre, and is famous for productions like "Les Misérables" and "The Mousetrap."
• It is considered a global center for performing arts, drawing millions of theater enthusiasts from around the world.
• Chicago
• Chicago has a rich theater scene and is home to the Goodman Theatre, Steppenwolf Theatre Company, and the Chicago Shakespeare Theater.
• It is known for its contributions to improvisational comedy, with institutions like The Second City being pioneers in the field.
• While Chicago is prominent in the theater world, it does not rival Broadway or the West End in terms of global recognition.

The correct answer is Present-day Spain and Portugal.

Key Points

• The Iberian Peninsula is located in the southwestern corner of Europe and consists mainly of Spain and Portugal.
• It is named after the ancient Iberians, who were among the earliest known inhabitants of the region.
• The peninsula also includes small parts of Andorra and Gibraltar and a minor section of southern France.
• The Iberian Peninsula is surrounded by water on three sides: the Atlantic Ocean to the west, the Mediterranean Sea to the east, and the Bay of Biscay to the north.
• It covers an area of approximately 583,000 square kilometers, making it one of the largest peninsulas in Europe.

Additional Information

• Present-day North and South Korea
• North and South Korea are located on the Korean Peninsula, which is situated in East Asia.
• The Korean Peninsula is bordered by China and Russia to the north and surrounded by the Yellow Sea, the East China Sea, and the Sea of Japan (East Sea).
• The region is known for its division into two sovereign states, North Korea and South Korea, since the Korean War (1950–1953).
• Present-day Iraq and Syria
• Iraq and Syria are located in the Middle East and are part of the region historically known as Mesopotamia.
• This area is often referred to as the “Cradle of Civilization” due to the early development of human culture and agriculture along the Tigris and Euphrates rivers.
• Present-day Uruguay and Argentina
• Uruguay and Argentina are located in South America and are part of the Southern Cone region.
• The two countries share the Río de la Plata basin, but they are not situated on a peninsula.
• The region is known for its plains, pampas, and economic ties, particularly in agriculture and cattle ranching.

Important Points

• The Iberian Peninsula
• The Iberian Peninsula has a rich history, including the influence of the Roman Empire, Visigoths, and Moors.
• The region played a significant role in the Age of Exploration, with Spain and Portugal leading maritime expeditions.
• Modern-day Spain and Portugal are known for their diverse cultures, languages, and historical landmarks, including UNESCO World Heritage Sites.

The correct answer is Kakatiya Dynasty.

Key Points

• The Warangal Fort was constructed during the reign of the Kakatiya Dynasty, specifically under the leadership of King Ganapati Deva and later refined by Queen Rudrama Devi.
• The fort is renowned for its unique architectural style, including the iconic ornamental gate known as the "Kakatiya Kala Thoranam," which is now the official emblem of Telangana state.
• Built in the 13th century, the fort served as a strategic and cultural center of the Kakatiya kingdom, showcasing their architectural and engineering prowess.
• The fort features concentric walls made of massive granite stones and is surrounded by a moat, reflecting advanced defense mechanisms of the Kakatiya era.
• UNESCO has included the fort in its tentative list for World Heritage Sites due to its historical significance and unique architectural elements.

Additional Information

• Chandela Dynasty
• The Chandela Dynasty ruled central India, particularly the Bundelkhand region, between the 9th and 13th centuries.
• They are best known for constructing the exquisite Khajuraho temples, which are a UNESCO World Heritage Site and reflect advanced temple architecture and intricate carvings.
• These temples are dedicated to Hindu deities and Jain Tirthankaras, showcasing India's spiritual and artistic heritage.
• Vijayanagar Dynasty
• The Vijayanagar Empire existed from the 14th to 17th centuries in South India and was famous for its capital, Hampi, now a UNESCO World Heritage Site.
• It was known for its military strength, trade networks, and patronage of art and architecture, including the construction of temples like the Virupaksha Temple and the Vittala Temple.
• The empire played a significant role in promoting Hindu culture and resisting invasions from the Delhi Sultanate and Bahmani Kingdom.
• Rashtrakuta Dynasty
• The Rashtrakuta Dynasty ruled large parts of the Indian subcontinent between the 8th and 10th centuries.
• They are best known for their contributions to art, literature, and architecture, particularly the Kailasa Temple at Ellora, which is a monolithic rock-cut temple dedicated to Lord Shiva.
• The Rashtrakutas were also patrons of Jainism and Sanskrit literature, as evidenced by their support for scholars like Amoghavarsha and the creation of Kavirajamarga.

Given:

Expression: $\frac{8(2.65)^3-1}{(5.3)^2+6.3}=?$

Formula Used:

a³ - b³ = (a - b)(a² + b² + ab)

Arithmetic Operations: Parentheses → Exponents → Multiplication/Division → Addition/Subtraction

Calculation:

$\frac{8(2.65)^3-1}{(5.3)^2+6.3}=?$

⇒ $\frac{(2\times2.65)^3-1}{(5.3)^2+6.3}=?$

⇒ $\frac{(5.3)^3-1}{(5.3)^2+5.3 + 1}=?$

⇒ $\frac{(5.3 - 1)(5.3^2 + 1 + 5.3 \times 1)}{(5.3)^2+5.3 + 1}=?$

⇒ $\frac{(5.3 - 1)(5.3^2 + 1 + 5.3)}{(5.3)^2+5.3 + 1}=?$

⇒ 5.3 - 1 = 4.3

∴ The correct answer is 4.3.

Given:

New fraction = 4/7

Numerator decreased by 20% ⇒ new numerator = 0.8x

Denominator increased by 25% ⇒ new denominator = 1.25y

Formula used:

0.8x / 1.25y = 4/7

Calculations:

0.8x / 1.25y = 4/7

⇒ 0.8 / 1.25 = (4/7) × (y/x)

⇒ 0.64 = (4/7) × (y/x)

⇒ y/x = (0.64 × 7) / 4

⇒ y/x = 4.48 / 4 = 1.12

⇒ x/y = 1 / 1.12 = 25/28

∴ Original fraction = 25/28

Given:

Average score of the class = 56

Average score of the brightest 25% students = 80

Average score of the dullest 35% students = 30

Ratio of boys and girls in the remaining 40% = 2:3

Average score of boys in the remaining 40% = 60

Formula Used:

Total average score = (Sum of scores of all students) / (Total number of students)

Average score = (Sum of scores in a group) / (Number of students in that group)

Calculation:

Let the total number of students = 100 (assume for simplicity).

⇒ Number of brightest 25% students = 25

⇒ Sum of scores of brightest 25% students = 25 × 80 = 2000

⇒ Number of dullest 35% students = 35

⇒ Sum of scores of dullest 35% students = 35 × 30 = 1050

⇒ Number of remaining 40% students = 40

⇒ Total sum of scores of all students = 100 × 56 = 5600

⇒ Sum of scores of remaining 40% students = 5600 - (2000 + 1050) = 2550

Let the number of boys in the remaining 40% = 2x and girls = 3x (ratio 2:3).

⇒ 2x + 3x = 40

⇒ x = 8

⇒ Number of boys = 2x = 16

⇒ Number of girls = 3x = 24

⇒ Sum of scores of boys = 16 × 60 = 960

⇒ Sum of scores of girls = Total sum of scores of remaining 40% - Sum of scores of boys

⇒ Sum of scores of girls = 2550 - 960 = 1590

⇒ Average score of girls = (Sum of scores of girls) / (Number of girls)

⇒ Average score of girls = 1590 / 24 = 66.25

∴ The correct answer is 66.25.

Given:

$(0.3 \times 0.3 - 0.02) (0.2 \times 0.2 + 0.01) ^{ - 1}$

Formula Used:

E×pression = (a × a - b) / (c × c + d)

Calculation:

⇒ (0.3 × 0.3 - 0.02) (0.2 × 0.2 + 0.01)^-1

⇒ (0.09 - 0.02) / (0.04 + 0.01)

⇒ 0.07 / 0.05

⇒ 1.4

∴ The correct answer is 1.40.

Given:

Average marks per paper = 72

Increase in marks for Mathematics = 15

Increase in marks for History = 17

New average marks per paper = 75.2

Formula Used:

Total marks = Average marks × Number of papers

New total marks = Old total marks + Increase in marks

New average marks = New total marks / Number of papers

Calculation:

Let the number of papers be n.

⇒ Old total marks = 72 × n

⇒ Increase in total marks = 15 + 17 = 32

⇒ New total marks = (72 × n) + 32

New average marks = 75.2

⇒ New total marks = 75.2 × n

⇒ (72 × n) + 32 = 75.2 × n

⇒ 32 = 75.2 × n - 72 × n

⇒ 32 = 3.2 × n

⇒ n = 32 / 3.2

⇒ n = 10

∴ The correct answer is 10.

Given:

$\frac{27.48-x}{3.5 × 0.3}=20$

Calculation:

$\frac{27.48-x}{3.5 × 0.3}=20$

⇒ (27.48 - x) = 20(3.5 × 0.3)

⇒ (27.48 - x) = 20 × 1.05

⇒ (27.48 - x) = 21

⇒ x = 27.48 - 21

⇒ x = 6.48

∴ The correct answer is 6.48.