Kolkata Police SI & Sergeant 27 March 2022 Official Paper (Previous Year Paper)

The correct answer is Ribonucleic Acid.

Key Points

• It is a polymer of nucleotides that is made up of a ribose sugar, a phosphate, and bases such as adenine (A), guanine (G), cytosine (C), and uracil (U).
• It has various biological roles in coding, decoding, regulation, and expression of genes.
• RNA is a nucleic acid messenger between DNA and ribosomes.
• Thymine (T) in DNA is replaced by uracil (U) in RNA.

Additional Information

• There are three main types of RNA –  rRNA (ribosomal), tRNA (transfer), mRNA (messenger).
• mRNA: It transcribes the genetic code from DNA into a form that can be read and used to make proteins.
  

mRNA carries genetic information from the nucleus to the cytoplasm of a cell.

• rRNA: It directs the translation of mRNA into proteins.
• tRNA: It brings or transfers amino acids to the ribosome that correspond to each three-nucleotide codon of rRNA. The amino acids then can be joined together and processed to make polypeptides and proteins.

Given that:

 

On applying the above in each options.

Option 1: 18 × 6 - 4 + 7 × 8 = 47

After interchanging signs

⇒ 18 + 6 ÷ 4 × 7 + 8 

⇒ 18 + 1.5 × 7 + 8 

⇒ 18 + 10.5 + 8

⇒ 36.5 ≠ 47 (RHS)

Option 2: 18 ÷ 6 + 4 - 2 ÷ 3 = 22 

After interchanging signs 

⇒ 18 - 6 × 4 ÷ 2 - 3

⇒ 18 - 6 × 2 - 3

⇒ 18 - 12 - 3

⇒ 3 ≠ 22 (RHS)

Option 3: 18 + 6 - 4 × 2 ÷ 3 = 26

After interchanging signs

⇒ 18 × 6 ÷ 4 + 2 - 3

⇒ 18 × 1.5 + 2 - 3

⇒ 27 + 2 - 3

⇒ 26 = 26 (RHS)

Option 4: 18 - 6 × 7 ÷ 2 + 8 = 63

After interchanging signs

⇒ 18 ÷ 6 + 7 - 2 × 8

⇒ 3 + 7 - 16

⇒ 10 - 16

⇒ -6 ≠ 63 (RHS)

Hence the correct answer is Option 3

The correct answer is Shillong.

Key Points

• Capital of Meghalaya is Shillong and during British-era Britishers nicknamed Shillong as Scotland of the East.
• Before 21st January 1972, Meghalaya was a part of Assam and then the districts of Khasi, Garo and Jaintia hills became the new state Meghalaya.
• Mawsynram, in Meghalaya, receives the highest rainfall in the world.

Additional InformationKohima

• Kohima is the capital city of Nagaland, a northeastern state of India. It is located in the eastern frontiers of the Himalayan mountain range.
• Known for its rich cultural heritage, Kohima is home to the Angami Naga ethnic group.
• It hosts the Hornbill Festival every December, a celebration showcasing local culture, crafts, and cuisines.

Imphal

• Imphal is the capital of Manipur.
• It is situated 786 m above sea level.
• Imphal is known for its scenic landscapes and greenery.

Aizol

• Aizol is the capital of Mizoram.
• Mizoram was granted statehood on 20 February 1987.
• Aizawl lies just north of Tropic of cancer and is a religious and cultural center of the Mizos.
• It is situated at an elevation of about 2,950 feet (900m).

Given:

 

Total initial volume of the mixture = 729 ml

 

Initial mixture ratio of milk to water = 7 ∶ 2

 

Desired mixture ratio of milk to water = 7 ∶ 3

 

Calculation:

 

Extract the quantity of milk and water from the initial mixture using the provided ratio.

 

⇒ Initial ratio (Milk : Water) = 7 ∶ 2

 

⇒ Total parts in the mixture = 7 parts (Milk) + 2 parts (Water) = 9 parts

 

⇒ Quantity of Milk = (7/9) × 729 ml = 567 ml

 

⇒ Quantity of Water = (2/9) × 729 ml = 162 ml

 

Determine the quantity of water required to achieve the desired mixture ratio. ⇒ Desired ratio (Milk : Water) = 7 ∶ 3

 

⇒ For 7 parts of milk, we need 3 parts of water ⇒ So, desired quantity of Water = (3/7) × 567 ml ≈ 243 ml

 

⇒ More Water to be added = Desired quantity of Water - Initial quantity of water

 

⇒ More Water to be added = 243 ml - 162 ml = 81 ml

 

Hence, the correct answer is "81ml".

The correct answer is 1992

• Panchayati Raj system was formalized in the year 1992 by the 73rd Amendment to the Indian Constitution.
• Panchayati Raj is the oldest system of local government in the Indian subcontinent.
• Panchayati Raj Institutions as units of local government have been in existence in India for a long time, in different permutations and combinations.
• Panchayati Raj, which was inaugurated by the then Prime Minister Pandit Jawaharlal Nehru on 2 October 1959 at Nagaur in Rajasthan.
• The first elections under the Rajasthan Panchayat Samitis and Zilla Parishads Act, 1959 were held in September-October 1959.

Key Points

• Key Features of Panchayat Raj System are:
• The Gram Sabha is a body consisting of all the people registered in the electoral rolls who belong to a village comprised within the area of the Panchayat at the village level.
• Seats are reserved for Scheduled Castes (SCs) and Scheduled Tribes (STs) and chairpersons of the Panchayats at all levels are reserved for SCs and STs in proportion to their population.
• 50 percent of the total number of seats are to be reserved for women. One-third of the seats reserved for SCs and STs are also reserved for women.
• There is a uniform policy with each term being five years. Fresh elections must be conducted before the expiry of the term. In the event of dissolution, elections compulsorily within six months (Article 243E).
• Panchayats have the responsibility to prepare plans for economic development and social justice with respect to the subjects as per the law put in place, which also extends to the various levels of Panchayat including the subjects as illustrated in the Eleventh Schedule (Article 243G).

Important Points

• The Panchayati Raj Institution (PRI) consists of three levels:

Given:

 

Ratio 1: 17 ∶ 18

 

Ratio 2: 10 ∶ 11

 

Concept:

To compare two ratios, we can make the denominators of the two ratios equal by multiplying the first ratio by the LCM of 18 and 11 (which is 198) and the second ratio by the LCM of 18 and 10 (which is 180). The ratio with the larger numerator after the denominators are made equal is the greater ratio.

 

Solution:

 

Rewrite the two ratios with the LCM of the denominators:

 

Ratio 1: 17/18 × 11/11 = 187/198

 

Ratio 2: 10/11 × 18/18 = 180/198

 

Compare the numerators of the two ratios:

 

187 > 180

 

The ratio 17 ∶ 18 is greater than the ratio 10 ∶ 11.

 

Hence, the correct answer is 17:18.

The correct answer is Raja Ravi Barma.

Key Points

• The famous painting named "Damayanti" is the creation of the famous painter Raja Ravi Varma.
• Raja Ravi Varma (1848 – 1906) was a celebrated Indian painter and artist, considered to be among the greatest painters in the history of Indian art.
• His works are held as national treasures in India.
• His paintings are considered to be among the best examples of the fusion of Indian and European traditions in the domain of modern Indian art.
• Raja Ravi Varma's depiction of "Damayanti" (a character from the Indian epic, Mahabharata) is one of his most recognized paintings.
• In the Mahabharata, Damayanti is a princess whose beauty is so surpassing that she is pursued by gods and humans alike.
• She is famously married to Nala, the king of Nishadha, after a complicated series of events, including a swayamvara (an event where a bride selects her groom from a group of suitors).
• In Raja Ravi Varma's depiction of Damayanti, he portrays her in all her ethereal beauty, proving his extraordinary abilities to represent Indian mythological and legendary characters with a realism and vitality that brings them alive for the viewer.
• Damayanti's beauty, her rich clothing and jewelry, her regal stature, all are captured in a style that combines European techniques with a purely Indian sensibility.

Given:

 

Total value to be divided: 81

 

Concept:

 

This problem can be solved by setting up simultaneous equations based on the given conditions and then solving them.

 

Solution:

 

Let the three parts be x, y, and z. According to the given conditions, we have: ⇒ x/2 = y/3 = z/4

 

This implies the ratios of x, y, and z are 2, 3, and 4, respectively because x is half of some number, y is a third of that same number, and z is a quarter of that number hence x:y:z = 2:3:4.

 

We also know that the sum of the parts x, y, and z equals 81.

 

⇒ x + y + z = 81

 

We can calculate the total ratio,

 

⇒ Total Ratio = 2 + 3 + 4 = 9

 

The value of each ratio is given by: ⇒ Value of Each Part (p) = Total Value / Total Ratio ⇒ p = 81 / 9 = 9

 

Therefore, the three parts are:

 

⇒ x = 2 × 9 = 18 ⇒ y = 3 × 9 = 27 ⇒ z = 4 × 9 = 36

 

Hence, the three parts are 18, 27, and 36, respectively.

The correct answer is Om Birla.

Key PointsLok Sabha Speaker:

• The presiding officer of the Lok Sabha is known as the Lok Sabha speaker.
• Lok Sabha is the House of the People and it is also known as the lower house of the Parliament of India.
• The current speaker of the Lok Sabha is Om Birla.​
• The 1st speaker, Ganesh Vasudev Mavalankar served as the speaker from 15th May 1952 to 27th February 1956.
• In the very first meeting of the Lok Sabha election, the Lok Sabha speaker is elected.
• They serve in the House of People for five years.
• The candidates for the position of speaker are among the sitting people of Lok Sabha.

Additional Information

• List of the Speakers of the Lok Sabha:

The correct answer is Akira Kurosawa.

Key Points

• The director of the famous movie "Rashomon" is Akira Kurosawa.
• Akira Kurosawa (1910–1998) was a prominent and influential figure in the world of cinema.
• He was a Japanese film director and screenwriter, who directed 30 films in a career spanning 57 years.
• His films have had a significant impact on global cinema, influencing many filmmakers around the world.
• "Rashomon" (1950) is one of Akira Kurosawa's most distinguished films.
• It depicts a complex narrative of the same incident (a samurai's murder and the rape of his wife) told from the perspectives of four different characters—a bandit, the wife, a samurai (through a medium), and a woodcutter.
• Each of them has a different version of the events, leaving the viewer to grapple with the elusive nature of the truth.
• The movie is noteworthy for its narrative structure, its intensive examination of subjective reality versus objective truth, and its profound exploration of ethical complexities.
• It has won numerous awards, including the Golden Lion at the Venice Film Festival in 1951, and it played a significant role in introducing the Western world to Japanese cinema.

Additional Information

• Andrei Tarkovsky was a Russian filmmaker, writer, and film editor, noted for his work in philosophical and spiritual themes.
• Michelangelo Antonioni was an Italian film director, screenwriter, and novelist, known for his "trilogy on modernity and its discontents".
• Krzysztof Kieślowski was a Polish film director and screenwriter, known for his "Three Colors trilogy".

Given:

 

The first 30 natural numbers are 1, 2, 3, 4, ..., 30.

 

Concept:

 

The sum of an arithmetic series is the number of terms in the series times the average of the first and last terms.

 

Formula:

 

Sn = n/2(a + l)

 

where:

 

Sn is the sum of the series

 

n is the number of terms in the series

 

a is the first term in the series

 

l is the last term in the series

 

Solution:

 

Define the variables:

 

n = 30 (number of terms)

 

a = 1 (first term)

 

l = 30 (last term)

 

Substitute the values in the formula:

 

Sn = n/2(a + l) = 30/2(1 + 30) = 30/2 × 31 = 465

 

Therefore, The sum of the first 30 natural numbers is 465.

The correct answer is Bipin Chandra Pal.

Key Points

• The author of 'The Soul of India' is Bipin Chandra Pal.
• Bipin Chandra Pal (1858-1932) was a renowned freedom fighter, journalist, writer, and orator from India.
• He is often referred to as the 'Father of Revolutionary Thoughts' in India and was among the triumvirate, referred to as "Lal-Bal-Pal," of key leaders of the Indian Independence movement against British colonial rule during the early 20th century.
• The triad comprised Lala Lajpat Rai (Lal), Bal Gangadhar Tilak (Bal), and Bipin Chandra Pal (Pal).
• 'The Soul of India' is one of his most notable works and is considered a significant contribution to Indian philosophical and political thought.
• In this book, Pal discusses the spiritual and cultural roots of India, its history, its civilization, and the future path that the nation was to follow.
• He critiques both British imperialism and the narrow-mindedness of some sections of Indian society.

Symbol for family tree: 

Rita is the aunt of Nikhil. 

Hence Option 3 is the correct answer.

The correct answer is South America.

Key Points

• The most arid place on Earth is situated in South America. Specifically, it is the Atacama Desert.
• The Atacama Desert is located along the Pacific coast of northern Chile and is considered the driest non-polar desert in the world.
• Its aridity is the result of a constant temperature inversion due to the cold offshore Humboldt Current and the Andes Mountains.
• The average rainfall in the Chilean region of the Atacama is just 1 millimeter (0.04 inches) per year.
• Some weather stations in the Atacama have never received rain.
• Its soil composition has been likened to that of Mars, and the region is often used as a testing site for Mars rovers.

Additional Information

• Africa: The Sahara Desert in Africa is the largest hot desert in the world but not the most arid. While extremely dry, some regions of the Sahara receive more periodic rainfall than the Atacama.
• Asia: This continent includes the Arabian and Gobi deserts. While these are indeed arid regions, they are not as arid as the Atacama in South America.
• Australia: This continent features several deserts, including the Great Victoria and Simpson deserts. Although these regions are characterized by low rainfall and high temperatures, they do receive more moisture than the Atacama.

Given:

 

First Discount: 10%

 

Second Discount: 20%

 

Concept:

 

The concept used here is successive discounts. When discounts are applied successively, they are multiplied together, but one minus the discount rate

 

Solution:

 

Let's assume the original price to be 100 for simplicity of calculations.

 

First discount is applied: ⇒ New price = Original price × (1 - First discount rate)

 

⇒ New price = 100 × (1 - 0.10) = 90

 

Then the second discount is applied on the new price: ⇒ Final price = New price × (1 - Second discount rate)

 

⇒ Final price = 90 × (1 - 0.20) = 72

 

Calculate equivalent total discount: The equivalent total discount is the difference between the original price and final price divided by the original price:

 

⇒ Equivalent total discount = (Original price - Final price) ÷ Original price × 100%

 

⇒ Equivalent total discount = (100 - 72) ÷ 100 × 100% = 28%

 

Hence, applying a 10% discount followed by a 20% discount is equivalent to a total discount of 28%.

The opposite sides are given below:

Note:- Two opposite faces are never seen together or adjacent to each other.

In figure (1):  

None of the opposite faces are seen together nor they are adjacent to each other. Thus this cube can be made.

In figure (2):

 Here the shaded potion cannot be adjacent to the doted side. The doted side should be opposite to the shaded side. Hence this cube cannot be formed.

In figure (3): 

None of the opposite faces are seen together nor they are adjacent to each other. Thus this cube can be made.

In figure (4): 

None of the opposite faces are seen together nor they are adjacent to each other. Thus, this cube can be made.

Hence the correct answer is Option 2: 1, 3 and 4 only

Mistake Points

Cube will form with these sides. Yes, it is confusing because there have three empty sides. In this type of question, you should focus on the possible case. We should ignore the empty sides which are opposite to symbols and try to form a dice with the other empty side.

Given:

 

Simple interest rate: 6 1/4% per annum

 

Concept:

 

The formula for simple interest is I = PRT/100, where 'I' is the interest, 'P' is the principal amount, 'R' is the rate of interest, and 'T' is the time in years. In this problem, the interest equals to the principal as money doubles itself.

 

Solution:

 

Let the principal (P) be 1 unit (for simplicity), hence the interest (I) at the end of the period is also 1 unit (because the money doubles).

 

Convert the rate of interest to a decimal: R = 6.25 / 100 = 0.0625.

 

Substituting I, P and R into the formula and solving for T:

 

⇒ 1 = 1 × 0.0625 × T ⇒ T = 1 / 0.0625 ⇒ T = 16

 

Hence, the time required to double the sum of money at 6 1/4% simple interest per annum is 16 years.

Given:

 

Total number of mobile phones: 80

 

The average price of all mobile phones: Rs. 30,000

 

Average price with highest and lowest phones sold out: Rs. 29,500

 

Cost of the highest price mobile: Rs. 80,000

 

Concept:

 

The total cost of the items is the product of the average cost and the number of items. The average price is calculated without the highest and lowest items by subtracting their cost from the total cost and dividing by the new number of items.

 

Solution:

 

First, we calculate the total cost of all 80 mobile phones

 

⇒ Total cost = Average price × Total number

 

⇒ Total cost = Rs. 30,000 × 80 = Rs. 2,400,000

 

Secondly, we calculate the total cost of the 78 mobile phones after selling the highest and lowest price phones

 

⇒ New Total cost = New Average price × New Total number ⇒ New Total cost = Rs. 29,500 × 78 = Rs. 2,301,000

 

To find out the cost of lowest the mobile, we subtract the cost of the highest price mobile and the total cost of the 78 phones from the total cost of all 80 phones

 

⇒ Cost of lowest price phone = Total cost - New Total cost - Cost of highest price phone

 

⇒ Cost of lowest price phone = Rs. 2,400,000 - Rs. 2,301,000 - Rs. 80,000 = Rs. 19,000

 

Therefore, the cost of the lowest price mobile phone is Rs. 19,000.

The correct answer is Jahangir.

Key Points

• On 18 September 1615, English diplomat Sir Thomas Roe arrived at the Surat port as the ambassador of the English King James I to Mughal Emperor Jahangir’s court.
• He stayed in the Mughal court for three years from 1615 to 1618.
• The East India Company received the royal charter to trade with India from the British monarch Elizabeth I in 1600.
• Their envoy William Hawkins had visited Jahangir in 1608.

The correct answer is Tea.

Key Points

• India earns most of its foreign currency from the Tea sector.
• India is one of the world's largest producers of tea, and it exports a significant portion of its production. Famous for its Darjeeling and Assam teas, India's tea industry constitutes a substantial part of the agriculture-based export economy.
• The processed tea is shipped to countries all around the world, contributing a significant amount to India's foreign exchange earnings.
• That being said, it's important to remember that while tea, spices, jute, and tobacco are all significant agricultural exports from India, they do not represent the sectors that earn the most foreign exchange for the country as a whole.
• There are other sectors such as information technology services, petroleum products, textiles, gems and jewelry, which account for a more substantial share of India's export earnings.
• Therefore, based on the options provided, 'Tea' is the correct answer but in a broader context and a larger frame, sectors like IT services and petroleum products earn more foreign exchange for India.

Given data:

The fraction after increasing the numerator and denominator is 4/11.

<br>

The numerator is increased by 200%.

<br>

The denominator is increased by 120%.

<br>

Concept:

The percentages of increase applied to the numerator and denominator would be applied as follows: original value × 1 + (percentage/100)

Solution:

x × (1+200/100), which equals 3x.

Similarly, the denominator increased by 120% can be represented as y ×

(1+120/100), which equals 2.2y.

Given that we now have the ratio 3x / 2.2y = 4/11.

⇒ We cross-multiply to find the values. 3x × 11 = 4 × 2.2y.

⇒ Simplifying this gives 33x = 8.8y.

⇒ From this, we can conclude that the ratio x/y = 8.8 / 33.

Simplifying this fraction, we get x/y = 4/15.

Therefore, the original fraction is 4/15.

The correct answer is Bangalore.

• Bangalore is popularly referred to as the 'Electronic City of India'.

Key Points

• Electronic City is an information technology hub in Bangalore, India.
• R. K. Baliga was the first Chairman and regarded as the father of the electronics city in Bangalore.
• It is the country's largest IT exporter and is home to many national and international tech companies, startups, and research institutions.
• Bengaluru other Sobriquets:
• Silicon Valley of India
• Space City
• Science city of India
• Garden city of India
• Pensioners Paradise

Additional Information

• Other Sobriquetes:

The Logic followed here is:

<br>

2 × 8 + 1 = 17

<br>

17 × 8 + 1 = 137

Similarly,

<br>

137 × 8 + 1 = 1097

Hence the correct answer is Option 3: 1097

The correct answer is Torricelli.

Key Points 

• Evangelista Torricelli (1608-1647) was an Italian physicist and mathematician who is best known for his invention of the barometer in 1643.
• Torricelli was both a student and a secretary of Galileo, and he made several significant contributions to the field of physics.
• His experiments with mercury and vacuums led to the development of the first mercury barometer.
• 'Barometer' is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather.
• Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries.

 Additional Information

• Amedeo Avogadro: He was an Italian scientist, most noted for his contributions to molecular theory, including Avogadro's law on gases' behavior.
• Alexander Graham Bell: Bell is a well-known scientist and inventor. He patented the first practical telephone in 1876.

The correct answer is Plato.

Key Points

• The Republic book was authored by Plato in around 375 B.C.
• Plato was the founder of the Platonist school of thought and the Academy.
• The famous philosopher Aristotle was the student of Plato and the famous philosopher Socrates was the teacher of Plato.
• Historically and intellectually, the Republic book is considered as the world’s most influential work on Political Theory and Philosophy.
• In the book, there is a dialogue between Socrates and various Foreigners and Athenians who tries to understand Justice.
• Other Notable works of Plato are:
• Apology.
• Crito.
• Euthyphro.
• Meno.
• Parmenides.
• Phaedo.
• Phaedrus.
• Symposium.
• Timaeus.

Additional Information

• Homer:
• Homer is a legendary ancient Greek epic poet, traditionally said to be the author of two of the greatest epic poems of ancient Greece, the Iliad and the Odyssey.
• Aristotle:
• Aristotle was a student of Plato and later tutored Alexander the Great.
• He is considered one of the greatest philosophers in history, contributing to many areas, including physical sciences, biology, drama, music, politics, ethics, and government.
• Socrates:
• Socrates was a classical Greek philosopher credited as one of the founders of Western philosophy.
• Socrates did not leave any written works; our knowledge of his teachings comes primarily from the accounts of his students, particularly Plato and Xenophon.
• The Socratic method, lateral thinking, questioning to stimulate critical thinking, and illuminating ideas are named after him.

Here all the land animals and land animals are animals.

The least possible Venn diagram is:

Hence the correct answer is Option 3

The correct answer is Venezuela.

Key Points

• Caracas is the capital of Venezuela.
• Venezuela, officially known as the Bolivarian Republic of Venezuela, is a country located on the northern coast of South America.
• Caracas, located in the center-north of the country close to the Caribbean Sea, is Venezuela's largest city and serves as its administrative and political center.

Additional Information

• Ecuador: The capital of Ecuador is Quito. Also known as San Francisco de Quito, it's one of the highest official capitals in the world, located in the Andean foothills at an altitude of 2,850 meters.
• Philippines: The capital of the Philippines is Manila. It is situated on the eastern shore of Manila Bay and is one of the oldest cities in the country.
• Peru: The capital of Peru is Lima. Lima is located on Peru's arid Pacific coast and it is both the largest city in Peru and the second-largest city in the Americas by population.

The least possible Venn diagram is:

Conclusions: 

I. All cars are windows → True (As all cars are bottles and all bottles are windows)

II. Some cars are dolls → False (As there is no definite relation between cars and dolls. It can be possible but is not definite.

III. Some windows are cars → True (Since all cars are bottles and all bottles are windows. Therefore some windows are cars)

Hence the correct answer is Option 4: Only I and III follow.

The logic follows here:

• Upper side three shapes flip and the lower side two shapes rotate only not flip. According to the given pattern in the solution figure.

​

Hence, the correct answer is "option (2)".

The correct answer is Desert region.

Key Points

• A bajada is a landform found in desert regions.
• Bajadas are common in arid regions like deserts, where they are formed by the confluence of multiple alluvial fans.
• Alluvial fans are cone-shaped deposits of gravel, sand, and smaller sediments that accumulate over time where a narrow mountain stream enters a broader valley or plain.
• When multiple alluvial fans overlap side-by-side, they create the characteristic wedge shape draping down from mountains towards the basin floor, a landform known as a bajada.

Additional Information

• Mountain Peak areas: Mountain peaks typically involve features like ridges, cliffs, and valleys, not bajadas.
• Plainland:  A plain is a broad, typically flat stretch of land. It's not normally characterized by the piled-up sediments which form bajadas, though there are depositional plains where alluvial deposits can accumulate over time.
• Plateau region: Plateaus are elevated regions which are relatively flat on top.

Given:

 

Number to find the cube root of 148877

 

Concept:

 

The cube root of a number can be found by raising that number to the 1/3 power. It's the value that, when cubed (multiplied by itself three times), gives the original number.

 

Solution:

 

To find the cube root of a number, you raise that number to the 1/3 power.

 

⇒ Cube root of 148877 = 148877^(1/3)

 

Performing the calculation gives:

 

⇒ Cube root of 148877 ≈ 53

 

Therefore, the cube root of 148877 is approximately 53.

The correct answer is Russia.

Key Points

• Russia is the largest country in the world by geographical area.
• Russia covers about 17.1 million square kilometers, making it the country with the largest land area on Earth.
• This large geographical area spans Eastern Europe and northern Asia.
• Russia has a varied topography with plains, steppes, taigas, mountains, and many more features.
• It spans 11 time zones due to its vast longitudinal range.
• Russia is home to the largest forest reserves in the world, owing to its extensive taiga forests.

Additional Information

• Vatican City: This is in fact the smallest independent state in the world, covering just 44 hectares (110 acres).
• China: While China is the 3rd largest country by area, it's significantly smaller than Russia, covering about 9.6 million square kilometers.
• Australia: Australia is the 6th largest country by surface area, its territory spans approximately 7.7 million square kilometers.

The correct answer is Warren Hastings.

Key Points

• 'Panchshala Bandobast', also known as the 'Five Schools Settlement' was introduced by British Governor Lord Hastings during his tenure as Governor-General of Bengal from 1774 to 1785.
• The "Panchshala Bandobast" was a significant part of Hastings's administrative and revenue reforms. His primary objective was to stabilize the land revenue system, which had been chaotic and heavily biased against cultivators.
• His strategy involved an attempt to create a class of loyal and vested intermediaries (later known as Zamindars) between the state and the vast rural peasantry.
• This reform was named the "Panchshala (Five-Schools) Bandobast" as it divided land revenue collection into five parts or 'schools' that covered different aspects of the process.
• This setup came to be known as the Permanent Settlement or Zamindari system, which had far-reaching consequences, with both positive effects (administrative stability, encouragement of settled cultivation) and negative impacts (the creation of a middleman class, poor peasant conditions).

Additional InformationThe five parts were:

• Fixing the amount of land revenue that the state demanded from landholders and keeping it unchanging.
• Making the landholder or Zamindar the proprietor of the land as long as the landholder fulfilled the obligation of paying land revenue.
• Making land revenue demand the first charge on land. This meant that satisfying the land revenue demand held priority over all other claims on the income derived from land.
• The right to sell the land of a defaulting landholder for recovering arrears of land revenue.
• The creation of a network of civil and criminal courts, with the Zamindar lower down in the hierarchy of civil courts and given magisterial powers within their Zamindaris.

According to the English alphabet & its positional values:

The logic followed here is:

The 1st two letters are increased by 3.

The middle letter/ vowel is coded as it is.

The last two letters are decreased by 2.

Similarly,

Hence the correct answer is Option 4: VKIDR

The correct answer is Marie Curie.

Key Points

• The radioactive element Radium was discovered by scientist Marie Curie, along with her husband Pierre Curie.
• Marie Curie, was a Polish-born physicist and chemist who conducted pioneering research on radioactivity – a term she herself coined.
• In fact, not only did she discover radium, but she also discovered another element, polonium, which she named after her native country, Poland.
• Her work with radium began as a continuation of the research conducted by Henri Becquerel, who first discovered radioactivity in uranium minerals. Intrigued by Becquerel's work, the Curies proceeded to investigate uranium's properties and then expanded their research to other potential elements that exhibited the same behavior.
• During their research, the Curies established that radioactivity wasn't due to interactions with other elements but was, instead, an atomic property.
• This was a groundbreaking revelation at the time and fundamentally changed the understanding of how atoms worked.
• From ore called pitchblende, which was known to contain uranium, they managed to extract trace amounts of a significantly more radioactive element, which they named radium.
• This discovery in 1898 confirmed their hypothesis that radioactivity was not unique to uranium.
• Marie Curie's work on radioactivity has earned her a host of prestigious accolades, including two Nobel Prizes: the Nobel Prize in Physics (which she shared with Pierre Curie and Henri Becquerel) in 1903, and the Nobel Prize in Chemistry in 1911.
• She was the first woman to win a Nobel Prize, and she remains the only person to win Nobel Prizes in two different fields of the natural sciences.
• Her contributions to science, particularly in the field of radioactivity, have made a significant impact on the world.

Additional Information

• Michael Faraday:
• ​A British scientist who made significant contributions to the study of electromagnetism and electrochemistry, Faraday is particularly known for his work in establishing the basis for the electromagnetic field concept in physics.
• He also discovered electromagnetic induction, diamagnetism, and electrolysis.
• Albert Einstein:
• Famously known for his theory of relativity and his mass-energy equivalence formula E = mc², Einstein's work had a significant impact on the development of the theory of quantum mechanics.
• Isaac Newton:
• Living in the 17th and 18th centuries, Isaac Newton was instrumental in developing the principles of modern physics, notably through his laws of motion and universal gravitation.

Given:

 

(-251 × 21 × -12) ÷ ? = 158.13

 

Concept:

 

This problem is an algebraic equation that requires manipulation to isolate '?'. This involves calculating the product of the numbers on the left side and dividing it by 158.13.

 

Solution:

 

First, calculate the product in the brackets on the left (-251 × 21 × -12):

 

⇒ -251 × 21 × -12 = 63,252

 

Now, use the equation to solve for '?'

 

⇒ 63,252 ÷ ? = 158.13 ⇒ ? = 63,252 ÷ 158.13

 

Calculate the value for '?' by dividing: ⇒? ≈ 400

 

Therefore, the value of '?' is approximately 400.

The correct answer is Option 2: Discuss with your colleagues and then take step jointly.

 

Key Points

• Checklist for attempting SRT questions:

1. Read the question and options carefully.
2. Look for options that are realistic, optimistic, and reflect officer-like qualities.
3. Do not skip any situation.
4. Relegate the negative sentences and choose the most logical option among the remaining. As time is an important factor, hence your thinking ability should be swift.
5. React quickly and be logical.

Additional Information

Officer qualities:

The correct answer is Operation Ganga​.

Key Points

• Operation Ganga
• It was an evacuation mission to bring back all the Indian nationals who were stranded in Ukraine during Russia- Ukraine war.
• There were around 20,000 Indians including students stuck in Ukraine.
• The Indian evacuation flights operated from neighbouring countries like Romania and Hungary.
• The government is facilitated the evacuation of stranded Indians from its borders crossing Romania, Hungary, Poland, and Slovakia.
• A dedicated Twitter handle ‘OpGanga Helpline’ to assist Indian evacuation from Ukraine was also announced.
• 

Given data:

Length of the first train (L1) = 100 meters.

<br>

The speed of the first train (Speed1) = 50 km/hr.

<br>

Length of the second train (L2) = 120 meters.

<br>

The first train crosses the second train in (T) = 6 seconds.

<br>

Concept:

When two objects are moving in opposite directions, their relative speed is the sum of their individual speeds.

Solution:

First, we convert the speed of the first train from km/hr to m/s by multiplying by

<br>

(5/18): Speed1 = 50 × (5/18) m/s = 13.89 m/s.

When two trains move in opposite directions and they cross each other, the

<br>

distance covered is the sum of the lengths of the two trains. Therefore, the total

<br>

Distance (D) covered is 100 +120 = 220 meters.

The relative speed (Speed R) of two objects moving in opposite directions is the sum of their speeds. As the time to cover the total distance at the relative speed is given, we can express the relative speed as: Speed R = D / T = 220 / 6 = 36.67 m/s.

Hence, the speed of the second train (Speed2) in m/s is the difference between the relative speed and the speed of the first train: Speed2 = Speed R - Speed1 = 36.67 m/s - 13.89 m/s = 22.78 m/s.

We convert this speed back to km/hr by multiplying by (18/5): Speed 2 = 22.78 × (18/5) km/hr = 81.97 km/hr.

Therefore, the speed of the second train is approximately 82 km/hr.

The mirror image of the figure is given below:-

 

Hence the correct answer is Option 3

The correct answer is Allahabad Prashasti.

Key Points 

• The Allahabad Prashasti or the Allahabad Pillar Inscription is a very important source that gives information about the extensive military campaigns and conquests of Samudragupta, who was one of the most prominent rulers of the Gupta Dynasty.
• This prashasti was composed by Harishena, a court poet and minister of Samudragupta, and it provides an elaborate description of the king's military campaigns, his benevolence, and his talents.
• It was inscribed on an Ashokan pillar located at Allahabad (Prayagraj), Uttar Pradesh, India.
• The Allahabad Prashasti is a significant example of ancient Sanskrit prose and offers valuable insights into the political and cultural life of Gupta-era India.

The correct answer is Medicine.

Key Points

• The Dr. B. C. Roy awards, instituted in 1962, are given to eminent achievers in the field of Medicine.
• The awards are named after the noted doctor Bidhan Chandra Roy.
• The Medical Council of India confers awards to the experts in the field.

Additional Information

English Alphabet series:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Reverse order:

ZYXWVUTSRQPONMLKJIHGFEDCBA

Eighth letter to the right of 'O' is G

ZYXWVUTSRQPONMLKJIHGFEDCBA

Hence the correct answer is Option 2: G

The correct answer is Aswaghosha.

Key Points

• Kushan Emperor Kanishka is believed to have converted to Buddhism under the influence of the Buddhist scholar and monk Aswaghosha.
• Aswaghosha was a Buddhist philosopher and dramatist, considered the greatest poet and playwright in Sanskrit after Kalidasa.
• Aswaghosha played a crucial role in spreading Buddhism and is credited with converting the Kushan emperor Kanishka to Buddhism.
• Apart from his influential role, he is also known for his philosophical works and as the author of "Buddhacharita," a biography of Buddha.
• Emperor Kanishka is also well-known for convening the Fourth Buddhist Council in Kashmir, which was an attempt to discuss and reconcile differences in Buddhist doctrines.
• His reign marked a significant period of expansion and development for Buddhism, spreading it along the Silk Road into parts of Central Asia and China.
• Kanishka was a great patron of Buddhism, however, he also respected other religious traditions and included Zoroastrians, Greeks, and Hindus in his court.

Additional Information

• Agrasen:
• Maharaja Agrasen is a legendary figure and is known as the progenitor of the Agrawal community.
• He was a contemporary to the last Tirthankara, Mahavira.
• Birupaksha: 
• The term "Birupaksha" is most commonly associated with a deity worshipped in the Indian temples at Hampi and Pattadakal.

Given:

 

12², 14², 16²

 

Concept:

 

The problem requires basic arithmetic calculation. The operations should be carried out according to the order of operations, which stipulates that operations within brackets should be done first, followed by exponents, then multiplication and division from left to right.

 

Solution:

 

Calculate the square of each number inside the brackets:

 

⇒ (12)^2 = 144 ⇒ (14)^2 = 196 ⇒ (16)^2 = 256

 

Substitute the squares back into the equation and perform the multiplication and division:

 

⇒ [(12)^2 × (14)^2] ÷ (16)^2 = (144 × 196) ÷ 256

 

Perform the multiplication: ⇒ (144 × 196) = 28224

 

Finally, perform the division: ⇒ 28224 ÷ 256 = 110.25

 

Therefore, the value of [(12)^2 × (14)^2] ÷ (16)^2 is 110.25.

Solution

Let the number be P

3/4 x 2/9 x 1/5 x P  = 249.6

P = 249.6 x 30 

50% of P =  (50/100) x 249.6 x 30 

= 249.6 x 15

= 3744

Given:

 

The ratio of length to breadth: 6 ∶ 5

 

Difference between length and breadth: 34 meters

 

Concept: The perimeter of a rectangle is given by the formula Perimeter = 2 × (Length + Breadth).

 

The ratio of lengths can be used to derive the actual lengths and then be substituted into the formula.

 

Solution:

 

Let's assume that the length of the rectangular plot is 6x and the breadth is 5x.

 

According to the condition, the difference between the length and breadth is 34m. ⇒ 6x - 5x = 34 ⇒ x = 34

 

Now we can calculate the actual length and breadth:

 

⇒ Length = 6x = 6 × 34 = 204 meters ⇒ Breadth = 5x = 5 × 34 = 170 meters

 

Finally, calculate the perimeter using the formula: ⇒ Perimeter = 2 × (Length + Breadth) ⇒ Perimeter = 2 × (204 + 170) = 748 meters

 

Therefore, the perimeter of the rectangular plot is 748 meters.

The correct answer is 1757.

Key Points

• The Battle of Plassey is regarded as a historic turning point for the British in India.

• It established the political and military supremacy of the British in Bengal.

• Battle of Plassey

• The Battle of Plassey was fought in 1757 in the Plassey (or Palashi) region of West Bengal, on the east of the Bhagirathi river.

• British East India Company, led by Robert Clive, won against the forces of Siraj-ud-Daulah, the last independent Nawab of Bengal, and his French allies.

• In the aftermath, Mir Jafar was installed as the Nawab of Bengal, on the throne of Murshidabad.

Additional Information

• Reasons behind the Battle of Plassey
• The British victory in the Carnatic made the Nawab of Bengal apprehensive of the rising power of the British.
• The East India Company kept misusing its power, including fortifying Calcutta without the Nawab’s permission.
• The Nawab marched to Fort Williams and captured it, leading to the infamous ‘Black Hole of Calcutta’ incident.
• Robert Clive was sent to overthrow the Nawab leading to the battle.

Given:

 

The initial distance between the ambulance and the bus: is 40 meters

Time taken for the ambulance to overtake the bus: 20 seconds

Distance between the ambulance and bus after overtaking: 60 meters

Speed of ambulance: 30 km/hr

 

Concept:

 

The speed of a moving body can be calculated from the relation:

 

Speed = Distance/Time.

 

Solution:

 

Convert the speed of the ambulance from km/hr to m/s by multiplying with 5/18:

 

⇒ Speed of ambulance in m/s = 30 × (5/18) = 8.33 m/s

 

Calculate the total distance covered by the ambulance in 20 seconds:

 

⇒ Total distance covered by ambulance = Speed of ambulance × Time

 

⇒ Total distance = 8.33 m/s × 20 seconds = 166.6 meters

 

The ambulance covered 40 meters to reach the bus and 60 meters after that to go ahead of the bus. Subtract these distances from the total distance to find the distance covered by the bus:

 

⇒ Distance covered by bus = Total distance covered by ambulance - Distance ambulance was behind - Distance ambulance went ahead

 

⇒ Distance covered by bus = 166.6 m - 40 m - 60 m = 66.6 meters

 

Calculate the speed of the bus using the distance covered by bus and time:

 

⇒ Speed of bus = Distance covered by bus / Time

 

⇒ Speed of bus in m/s = 66.6 m / 20 seconds = 3.33 m/s

 

Finally, convert the speed of the bus from m/s to km/hr by multiplying by 18/5:

 

⇒ Speed of bus in km/hr = 3.33 m/s × 18/5 = 12 km/hr

 

Therefore, the speed of the bus is 12 km/hr.

The correct answer is The Tata Group.

Key Points

• Air India has been sold to Tata Group for a sum of Rs 18000 crore.
• Tata Group acquired 100% stake in Air India.
• Tata Group also acquired 100% stake in Air India's low-cost carrier named Air India Express.
• Tata Group also acquired  50% stake in AISATS ( Air India Singapore Airport Terminal Service).
• There were two bidders in the race for acquisition of Air India:

1. Tata Group
2. Spice Jet

Additional Information

• Air India has been sold to Tata Group in 2021.
• Air India was established as Tata Air Services in the year 1932.
• Air India was acquired by the Government of India in the year 1953 under the Air Corporations Act.

Haematology is the study of blood.

Similarly,

Phycology is the study of algae.

Hence the correct answer is Option 2: Algae

The logic followed here is:

14 + 12 + 3 + 7 = 36 (number at the centre)

Similarly,

9 + 11 + x + 16 = 54(number at the centre)

36 + x = 54

x = 54 - 36

x = 18

 

Hence the correct answer is Option 3: 18

The correct answer is Cuba.

Key Points

• The dance form 'Salsa' originated in Cuba.
• Salsa came into being in the mid-20th century in Cuba, a melting pot of Latin and Afro-Caribbean cultures.
• It has roots in various dance styles including Son, Rumba, and Afro-Cuban dance.
• Salsa music is greatly influenced by the Afro-Cuban Son, and over time, with influences from Puerto Rico and New York, it evolved into a distinct genre known today as Salsa.
• The Salsa dance and music culture expanded and evolved over the decades in the Hispanic districts of New York City, further spreading to other areas in the Americas, and also across the globe. However, its origins are most directly traced back to Cuba.

The correct answer is Ajatasatru.

Key Points

• Ajatashatru, the ruler of Magadha, was sitting on the throne after killing his father. That is why in history it is known as Kunik (Pitruhanta).
• He embraced Buddhism.
• He convented the first Buddhist council at Rajagriha in 483 BC.
• He won wars agaist Kosala and Vaishali.

Additional Information

• Haryanaka dynasty was the first important and powerful dynasty of Ancient Magadha.
• It was founded by Bimbisara in 544 BC.
• Its capital was Girivraja or Rajgir
• Bimbisara was the first king to have a standing army.
• it ended with the last king NagaDasaka in 413 BC.
• Kings of the Haryanka dynasty

1. Bimbisara (559-491 BC)
2. Ajatasatru (492-460 BC)
3. Udayabhadra/Udayin ( 460-444 BC)
4. Aniruddha
5. Manda
6. Nagadasaka

The given word: CUMBERSOME 

Option 1: SOBER → CUMBERSOME (can be formed)

Option 2: ROME → CUMBERSOME (can be formed)

Option 3: MOUSE  → CUMBERSOME (can be formed)

Option 4: MERCY → CUMBERSOME ( cannot be formed as Y is not present)

Hence MERCY cannot be formed by using the letters of the given word.

Hence the correct answer is Option 4: MERCY

The correct answer is Yangtze Kiang.

Key Points

Yangtze Kiang​ river:

• Yang-ti-si is the longest river in Asia which flows in China.
• It is also the 3rd longest in the World.
• Its length is 6300 km.
• Also, it is the longest river that flows in a single country.

Additional Information

• The other Rivers of Asia are as follows:

Given:

 

Time taken by A alone to complete the work: 12 days

 

Time taken by A and B together to complete the same work: 8 days

 

Concept:

 

If a task is being done in collaboration, then the combined rate of work is the sum of the individual rates.

 

Solution:

 

Let's assume that the total work to be done is 1 unit. Then, the rate at which A completes the work is:

 

⇒ Rate of A = Total work / Time taken by A = 1 / 12 = 0.0833 units/day

 

The combined rate at which A and B together complete the work is:

 

⇒ Combined rate of A and B = Total work / Time taken by both A and B = 1 / 8 = 0.125 units/day

 

Thus, the rate at which B completes the work (Rate of B) is the difference between the combined rate and A's rate:

 

⇒ Rate of B = Combined rate of A and B - Rate of A = 0.125 - 0.0833 = 0.0417 units/day

 

Finally, the time taken by B to complete the work alone is the total work divided by B's rate:

 

⇒ Time taken by B = Total work / Rate of B = 1 / 0.0417 = 24 days

 

Therefore, B alone can complete the work in 24 days.

The correct answer is Volt.

Key Points 

• Electromotive force is the electric potential generated by either an electrochemical cell or a changing magnetic field; It is also known as voltage.
• It is an electrical action produced by a non-electrical source, such as a battery (converts chemical energy to electrical energy) or generator (converts mechanical energy into electrical energy).
• Electromotive force is commonly denoted by the acronym emf, EMF or E.
• The SI unit for electromotive force is the volt.
• Electromotive force in a circuit maintains the potential difference.

Explanation:

• Electromotive Force (EMF) is the force which causes to flow the free electrons in any closed circuit due to difference in electrical pressure or potential. Its unit is Volt.
• Newton is the unit of force specifically mechanical forces.
• Columb is the unit of charge.
• Joule is the unit of energy.

So, the correct unit of electromotive force is Volt.

As per the given information,

Since the final final point is 2km to the west of her starting point, we can say that:

AD = BC = 2km

It is given that CD = 4km

Therefore AB = 4km 

Thus she rode 4km northwards initially.

Hence the correct answer is Option 1: 4km

The correct answer is Auxin.

Key Points

• Tropic movement in plants is controlled by the hormone Auxin.
• Auxins are a type of plant hormone that play a crucial role in coordinating many growth and behavioral processes in the plant's life cycle, including tropic movement.
• They are involved in cell elongation, apical dominance, tissue differentiation, and response to light and gravity.
• When a plant is exposed to light, auxins synthesized at the shoot tips help cells on the shaded side grow longer, causing the plant to bend towards the light, a phenomenon known as phototropism.

Additional Information

• Heteroauxin:
• This is another name for indole-3-acetic acid (IAA), which is the most common naturally occurring plant hormone of the Auxin class.
• It's involved in various aspects of plant growth and development, including tropic responses to light and gravity.
• Gibberellin:
• Gibberellins are a group of plant hormones that regulate growth and influence various developmental processes, including stem elongation, germination, dormancy, flowering, sex expression, enzyme induction, and leaf and fruit senescence. However, they do not primarily control tropic movement in plants.
• Cytokinin:
• Cytokinins are a class of plant growth substances (phytohormones) that promote cell division, or cytokinesis, in plant roots and shoots.
• They are involved primarily in cell growth and differentiation, but not specifically in the tropic responses of plants.

The correct answer is Iraq.

Key Points

• In 2021-22, India imported 22.1 billion dollars worth of crude oil from Iraq.
• India imports most of its crude oil from Iraq in 2021 to 22
• This is the highest amount of crude oil that India imported from any country in 2021-22.
• Saudi Arabia and the United States were the second and third largest suppliers of crude oil to India, respectively.
• India is the world's third-largest consumer of crude oil.
• India imports more than 85% of its crude oil requirements..

Additional Information 

Given:

 

56% of Y = 182

 

Concept:

 

To solve this problem, we can use the following formula:

 

Percentage = (part / whole) × 100

 

Solution:

 

Rewrite the given information as follows:

 

(56 / 100) × Y = 182

 

Solve the equation for Y:

 

Y = (182 × 100) / 56 = 325

 

Therefore, The value of Y is 325.

The Correct Answer is the Ministry of Rural Development. 

Key Points

• The Pradhan Mantri Gram Sadak Yojana is a nationwide plan in India to provide good all-weather road connectivity to unconnected villages.
• Of 178,000 (1.7 lakh) habitations with a population of above 500 in the plains and above 250 in the hilly areas planned to be connected by all-weather roads, 82% were already connected by December 2017 and work-in-progress on the remaining 47,000 habitations was on track for completion by March 2019.
• This Centrally Sponsored Scheme was introduced in 2000 by the then-prime minister of India Late Shri Atal Bihari Vajpayee.
• The PMGSY is under the authority of the Ministry of Rural Development and was begun on 15 th August 2000.
• It is fully funded by the central government. In November 2015, following the recommendations of the 14th Finance Commission, the Sub-Group of Chief Ministers on Rationalization of Centrally Sponsored Schemes, it was announced that the project will be funded by both the central government (60%) and states (40%).

Given Data:

 

Present ages of A and B are in the ratio 5:6.

 

After 7 years, the new ages of A and B are in the ratio 6:7.

 

Concept or Formula:

 

We can construct two equations based on the given data, using the concept of ratios and the standard formula for calculating ages.

 

Solution

 

Let A's current age be 5x and B's age be 6x, according to the ratio given.

 

⇒ A = 5x, B = 6x

 

After 7 years, A will be 5x+7 years and B will be 6x+7 years. But it's given that the ratio of their ages will be 6:7 after 7 years.

 

⇒ (5x + 7)/(6x + 7) = 6/7

 

Now we solve the equation (5x + 7)/(6x + 7) = 6/7.

 

⇒ 7 * (5x + 7) = 6 * (6x + 7) ⇒ 35x + 49 = 36x + 42 ⇒ x = 7

 

Substitute x=7 into the equation A = 5x. ⇒ A = 5*7 ⇒ A = 35

 

Therefore, the present age of 'A' is 35 years.

The correct answer is Burning of paper.

Key Points

• A chemical change involves a chemical reaction, with new substances produced as a result of the change.
• Burning of paper is a chemical change.
• Burning (combustion) is a chemical reaction that combines combustible material (in this case, paper) with an oxidant (oxygen in the air) to produce new substances (heat, light, ash, gases like carbon dioxide and water vapour).
• The products of this process have different properties from the original paper and oxygen, showing that a new substance is produced.

Additional Information

• Preparation of ice cubes from water: This is not a chemical change but a physical change. The conversion of water to ice is a phase change. No new substances are produced; water is still H2O in both solid (ice) and liquid states.
• Magnetization of soft iron: This is also a physical change. It involves the alignment of atoms in the iron which had previously been randomly distributed. No new substance is formed.
• Dissolution of cane sugar in water: This is a physical change, not a chemical change. The sugar molecules are dispersed within the water, but no new substance is formed. Sugar dissolved in water can be recovered by letting the water evaporate.

Given Data:

 

12 men can construct 1.5 km of road in 7 days.

 

28 men are required to construct 12 km of road.

 

Concept/Formula Used:

 

The concept of man-days in work problems. If a person can do a job in 'n' days, then his 1 day's work can be given as 1/n.

 

Solution:

 

Find out how many man-days are required to construct 1.5 km of road:

 

⇒ 12 men × 7 days = 84 man-days

 

Calculate how many man-days are required to construct 1 km of the road:

 

⇒ 84 man-days ÷ 1.5 km = 56 man-days/km

 

Determine how many man-days will be required to construct 12 km of road:

 

⇒ 56 man-days/km × 12 km = 672 man-days

 

⇒ 672 man-days ÷ 28 men = 24 days

 

it will take 28 men 24 days to construct 12 km of road.

 

Hence, the correct answer is "24 days".

The correct answer is Vadodara.

Key Points

• The Railway Staff College is also called " The National Academy of Indian Railway ".
• It is a centralized civil service, engineering, and medical training institute.
• It is located in Vadodara, Gujarat.
• It was founded in the year 1988.
• The current Director-General of the academy is Shri Sanjay Pal Singh Chauhan.
• The faculty of the academy comprises 24 experts drawn from various departments.
• Sports facilities are also available at the academy for different games.
• Several training programs also take place at the academy such as -
• Centralized training for IRAS, IRSS, IRPS, and IRMS.
• Foundation and Induction Program for Group A and B officers.
• Mid Service training
• Special Courses
• BIMSTEC training program.

The logic followed here is:

The first number is divided by 8 and the Second number divided by 6, so we get the same number

1) 104 ∶ 78

104 ÷ 8 = 13 , 78 ÷ 6 = 13 

2) 96 ∶ 80 

96 ÷ 8 = 12 , 80 ÷ 6 = 13.33 

3. 64 ∶ 48

64 ÷ 8 = 8 , 48 ÷ 6 =  8

4. 80 ∶ 60  

80 ÷ 8 = 10 , 60 ÷ 6 =  10

Hence, the correct answer is option 2.

The correct answer is Vitamin D.

Key Points

• Rickets in poultry is caused mainly by deficiencies of either vitamin D3, calcium, phosphorus, or calcium-phosphorus imbalance.
• Rickets is a childhood disorder of the bones where the bones become soft and prone to fractures. Bones tend to become weak due to an inadequate supply of nutrients, Vitamin D3 in particular.
• It is also caused due to a lack of calcium and phosphate in the body. Weak bones can lead to bone deformities.
• Vitamin D primarily comes from exposing the skin to sunlight.
• Other good sources of Vitamin D are fatty fish (such as tuna and salmon) and egg yolks.
• Rickets is a disease associated with the deficiency of Vitamin D.
• Rickets is of the following types:
• Nutritional Rickets–
• This is caused due to intake of food which lacks calcium, phosphorous, and vitamin D.
• Hypophosphatemic Rickets-
• It is caused due to low levels of phosphate. It is an X-linked genetic disorder where the kidneys are not able to control the amount of phosphate excreted in the urine.
• Renal Rickets-
• People suffering from kidney disorders have renal rickets. They cannot regulate the amount of calcium and phosphate excreted in the urine.

Additional Information

The statement implies that "most dresses in that shop are expensive" but not all. Hence, there might be some dresses that are cheap.

From the given conclusions:

1) Some dresses in that shop are expensive.

This logically follows from the statement as it is clearly stated that most, not all, dresses are expensive.

2. Handloom dresses in that shop are cheap.

We cannot infer this from the given statement because the price of handloom dresses is not specified in the statement.

3. There are no cheap dresses available in that shop.

This does not follow from the given statement, because the statement implies that while most dresses are expensive, there could be some that are not.

4)There are cheap dresses also in that shop.

This could potentially be true given that the statement says most, but not all, dresses are expensive, but it does not logically follow directly from the statement.

Therefore, the correct answer is  Some dresses in that shop are expensive.

The correct answer is Neurolema.

Key Points

• The axon, also known as a nerve fiber, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.
• Also known as the neurilemma or the sheath of Schwann, neurolemma is the outermost layer of the axon.
• In the peripheral nervous system, Schwann cells create this neurolemma, which wraps around the nerve fiber, providing insulation, protection, and also aiding in the regeneration of damaged fibers.

Additional Information

• Synapse: A synapse is the junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.
• Axoplasm: The axoplasm is the cytoplasm within the axon. It is contained within the axon's membrane, but it is not the outermost membrane itself. It's the 'content' inside the axon, not the 'container', which is the membrane.
• Dendrite: Dendrites are the segments of the neuron that receive stimulation in order for the cell to become active. They conduct electrical messages to the neuron cell body for the cell to function. They are not a part of the axon's structure, so this answer is incorrect.

The logic followed here is:-

In a column: (First number × Third number) + Second number = Fourth number 

In column 1: ( 7 × 3 ) + 8 = 21 + 8 = 29

In column 2: ( 4 × 3 ) + 7 = 12 + 7 = 19

In column 3: ( 5 × a ) + 6 = 31 

5a + 6 = 31

5a = 31 - 6

5a = 25

a = 25/5

a = 5

Hence, the correct answer is Option 4: 5

Given Data:

 

The number to be multiplied is 392.

 

Concept/Formula Used:

 

A number is a perfect square if its prime factors all appear an even number of times.

 

Solution:

 

Prime factorize the given number 392:

 

⇒ 392 = 2^3 × 7^2

 

To get a perfect square, each number in the prime factorization should appear an even number of times. Here, the power of 2 is not even. To make it even, we need one more 2.

 

Therefore, the smallest positive integer that we need to multiply 392 by to get a perfect square is the missing 2.

 

Therefore, the smallest positive integer that when multiplied with 392 results in a perfect square is 2.

The correct answer is Isohyets.

Key Points

• The lines joining places with equal rainfall are called Isohyets.
• Isohyets are lines on a map connecting areas that receive equal amounts of rainfall or precipitation in a given period.
• They are an important tool in the fields of meteorology and hydrology, and they assist in understanding the distribution of rainfall across different geographic regions.

Additional InformationContour Lines: Contour lines are lines drawn on a map connecting points of equal elevation, and are used primarily in topographic maps to indicate valleys, mountains, and the steepness of slopes.

The correct answer is Brimstone.

Key Points

• Brimstone is an ancient name for sulphur, particularly used in biblical contexts.
• In its natural state, brimstone, or sulphur, is a bright yellow crystalline solid.
• The name 'brimstone' translates to 'burning stone' as it burns easily, producing a blue flame.
• When burned, brimstone emits a strong, unpleasant smell, similar to that of rotten eggs, caused by sulphur dioxide gas.
• Sulphur occurs in pure form near volcanoes and hot springs and also in various minerals such as gypsum and iron pyrite.
• Brimstone is used in a wide range of industries, including the production of fertilizers, chemicals, and in the vulcanization of rubber.
• Despite its many uses, sulphur (brimstone) can also be destructive, contributing to acid rain when combined with water in the atmosphere.

The correct answer is Cornwallis.

Key Points

• The Treaty of Seringapatam signed in 1792, it ended the Third Anglo-Mysore War.
• Its signatories included Lord Cornwallis on behalf of the British East India Company and Tipu Sultan, the ruler of Mysore.

Additional Information

• Consequences of the war:
• As per the treaty, Tipu had to cede half of his kingdom to the English.
• He paid Rs.3 Crore as war indemnity to the British.
• Tipu also had to surrender two of his sons as surety to the British till he paid his due.

Calculation: 

 

Start with the given number: ⇒ 14785

 

Subtract 358: ⇒ 14785 - 358 = 14427

 

Subtract 4158: ⇒ 14427 - 4158 = 10269

 

Finally, subtract 9514: ⇒ 10269 - 9514 = 755

 

⇒ 14785 - 358 - 4158 - 9514 equals 755.

 

Hence, the correct answer is "755".

The correct answer is Gautamiputra Satakarni.

Key Points

• The Satavahana dynasty ruled in central and southern India starting from around the 1st Century BC.
• Among the Satavahana rulers, Gautamiputra Satakarni is considered the most eminent. His reign is generally dated to circa 106-130 CE.
• He is considered one of the greatest kings of the Satavahana Dynasty.
• His reign marked the high point of the dynasty’s power.
• He is known to have defeated the Western Kshatrapas and stopped their expansion.
• His reign is marked by prosperity, territorial expansion, and significant achievements in administration, maritime trade, and arts.

Additional Information

• Second Pulakeshin: Pulakeshin II was the most famous ruler of the Chalukya dynasty, not the Satavahana. He reigned in the Deccan area of India from 610 to 642 CE.

The count of triangles are as follows:

Thus there are 28 triangles in the figure.

Hence the correct answer is Option 2: 28

Given Data:

 

Selling price of the shirt when there is profit: Rs. 863

 

Selling price of the shirt when there is loss: Rs. 631

 

Concept/Formula Used:

 

In this type of problem, where the profit and loss are the same amount, the cost price of the item is the average of the two selling prices.

 

Solution:

 

Add the two selling prices: ⇒ Rs. 863 + Rs. 631 = Rs. 1494

 

Divide by 2 to find the average, which will present us with the cost price of the shirt:

 

⇒ Rs. 1494 ÷ 2 = Rs. 747

 

Hence, the cost price of the shirt is Rs. 747.

The correct answer is Norway.

Key Points

• Norway country is also known as the 'Land of Midnight Sun'.
• The country, Norway has acquired the name of the Land of Midnight Sun, as Norway experiences, the natural phenomena called the midnight sun.
• The land of the midnight sun is called so because the northern part of the country is located above the Arctic circle, where the sun shines 24 hours a day from Mid-May to Mid-July.
• From late May to late July, the sun never completely descends beneath the horizon in areas north of the Arctic Circle.
• The rest of the country experiences up to 20 hours of daylight per day.

Additional Information

• The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle when the sun remains visible at the local midnight.
• When the midnight sun is seen in the Arctic, the sun appears to move from left to right, but in Antarctica, the equivalent apparent motion is from right to left.
• This occurs at latitudes from 65°44' to 90° north or south, and this doesn't stop exactly at the Arctic Circle or the Antarctic Circle, due to refraction.

The given conditions are: A + B = C + D and A + D > B + C.

A + D > B + C

<br>

Subtract B + C from both sides

⇒ A + B - (B + C) = C + D - (B + C) 

to get  A - B > D - C

<br>

This means that A is greater than B by more than D is greater than C.

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Therefore, the following statement is definitely wrong: B > D

Since D is greater than B, the statement "B > D" is definitely incorrect.

So, the correct answer is B > D.

The correct answer is Gurugram.

Key Points

• Kala Ramachandran: First Woman Police Commissioner, 1994-batch Indian Police Service (IPS) officer Kala Ramachandran took charge as Gurugram's first woman police commissioner.

Additional Information About the Indian Police Service​

• The Indian Police Service is a central civil service under the All India Services along with the Indian Administrative Service and the Indian Forest Service.
• The IPS replaced the Indian Royal Police in 1948, a year after India became independent from the British Raj.
• The Indian Police Service was created under Article 312(2) in Part XIV of the Constitution of India.
• Article 312 of the Constitution states that if the Rajya Sabha has declared by resolution supported by not less than two-thirds of the members present and voting, that it is necessary or expedient so to do in the national interest, Parliament may by law provide for the creation of one or more All India Services (including an All India Judicial Service) for the Union and the States.
• IPS officers are recruited through the Civil Services Examination conducted by the UPSC (under Article 315-323 of the Constitution of India).

The logic followed here is:

Hence, the correct answer is "Option 3".

Given Data:

 

Difference between CI and SI: Rs. 122

 

Rate of Interest: 5% per annum

 

Time Period: 2 years

 

Concept/Formula Used:

 

The formula for the difference between CI and SI for 2 years is given by: Difference = (P × (R/100)^2), where P represents the principal sum, and R represents the rate of interest.

 

Solution:

 

Re-arrange the formula to isolate the principal sum 'P':

 

⇒ P = Difference ÷ (R/100)^2

 

Substitute the given values: ⇒ P = Rs. 122 ÷ (5/100)^2

 

⇒ P = Rs. 122 ÷ 0.0025 ⇒ P = Rs. 48800

 

Hence, the correct answer is  Rs. 48800.

According to the given information:

The number in all the geometrical figures is 4.

Hence the correct answer is Option 2: 4

The correct answer is Golf.

Key Points

• Anirban Lahiri is an Indian professional golfer.
• He is associated with the sport of golf.
• He has represented India in several international golf tournaments and has won multiple professional titles on various tours, including the Asian Tour and the European Tour.
• He has won a total of seven titles on the Asian Tour, including the Panasonic Open India in 2011 and 2014, the SAIL-SBI Open in 2012, the CIMB Niaga Indonesian Masters in 2014, the Maybank Malaysian Open in 2015, and the Hero Indian Open in 2015.
• He has also won two titles on the European Tour, the 2015 Maybank Malaysian Open and the 2015 Hero Indian Open.
• Additionally, he has represented India in the Olympics and various team events, including the Presidents Cup and the EurAsia Cup.

The correct answer is Babur and Jahangir.

Key Points

• The two Mughal emperors who wrote their memoirs are Babur and Jahangir.
• The memoirs of Babar is known as 'Babarnama'.
• The memoirs of Jahangir is 'Jahangirnama'.
• Babur was the founder of the Mughal empire.
• His full name is "Zahir-ud-din Muhammad Babur".
• Jahangir was the fourth Mughal emperor.
• His full name is "Mirza nur-ud-din -Beig Mohammad Khan Salim".
• The Sikh Guru Arjan Dev was killed on the orders of Jahangir.
• He was the fifth Guru of the Sikh religion.
• He has also compiled the first official edition "Adi Grant" of Sikh Scripture.

Given Data:

 

The number to which we want to add is 2055.

 

The number by which the sum has to be divisible is 27.

 

Concept/Formula Used:

 

When we want to find the smallest number to add to a given number so it's divisible by another number, we can use the remainder theorem.

 

Solution:

 

Divide the given number by 27 and obtain the remainder:

 

⇒ 2055 ÷ 27 = 76 remainder 3

 

Since we want the number to be exactly divisible by 27, we subtract the remainder from 27 to find out how far we are from the next multiple of 27:  ⇒ 27 - 3 = 24

 

Therefore,the correct answer is  24.

The correct answer is Finance.

Key Points

• Todar Mal was one of the Navaratnas and was related with Finance in Akbar's durbar.
• He served as the Mughal Empire's finance minister and was responsible for land revenue changes.
• In Akbar's durbar, Tansen was connected with music.
• The Mughals descended from two powerful dynasties.
• They were descended from Genghis Khan, the Mongol king who reigned over parts of China and Central Asia, on their mother's side.
• They were the sons and daughters of Timur, the ruler of Iran, Iraq, and modern-day Turkey, who died in 1404.

Important Points

• The Mughals, on the other hand, disliked being referred to as Mughal or Mongol.
• This was due to the fact that Genghis Khan's name was associated with the killing of countless people.
• It was also tied to their Mongol adversaries, the Uzbeks.

Given that seven persons A, B, C, D, E, F and G are standing in a straight line.

1) D is to the right of G.

2) E is between F and D.

3) There are three persons between G and B.

4) C is between A and B.

Hence,  G is on the extreme Left.

The correct answer is Agaricus.

Key Points

• Agaricus, a type of fungus commonly known as mushrooms, is the only option that isn't a non-flowering plant.
• Agaricus is a genus of mushrooms and belongs to the group of fungi, not plants.
• Pinus (a type of coniferous tree), Algae, and Spirogyra (a type of green algae) are all considered non-flowering plants as they reproduce via different methods and do not produce flowers.
• Pinus is part of the gymnosperms group, a type of non-flowering plant that reproduces via seeds that are not enclosed.
• Algae usually show plant-like characteristics and conduct photosynthesis but do not bear flowers.
• Spirogyra is another non-flowering form known as green algae. It reproduces asexually.

Additional Information

• Gymnosperms, such as Pinus, are unique among non-flowering plants; they expose their seeds within the cone instead of producing fruits.
• Algae's reproduction methods can be both sexual and asexual, differing from typical plant reproduction.
• Spirogyra, found mainly in freshwater habitats, has chloroplasts that display a unique helical shape.
• Although not a plant, the Agaricus genus includes a variety of mushroom species that can be edible. It releases spores for reproduction.

Concept/Formula Used:

 

Area of a square = (side length)^2.

 

In a square, the length of the diagonal is d = side x √2. Therefore, if the diagonal is the base reference, the area of the square

 

= ( diagonal / √2 )^2.

 

Solution:

 

Start with the formula for the area of a square:

 

⇒ Area = (diagonal / √2)^2

 

If we double the diagonal: ⇒ New Diagonal = 2 × diagonal

 

Area with the new diagonal will be: ⇒ New Area = (2 × diagonal / √2)^2

 

⇒ New Area = 4 × (diagonal / √2)^2 ⇒ New Area = 4 × Area

 

Therefore, the correct answer is "four times".

The correct answer is Kaiser-e-Hind.

The title given by the British Government to Mahatma Gandhi which he surrendered during the Non-Cooperation movement was Kaiser-e-Hind.

Key Points

Non-cooperation Movement (1920 AD-1922 AD):

• At the Calcutta session in September 1920 AD, Congress resolved in favour of the Non-cooperation Movement and defined Swaraj as its ultimate aim.
• The movement envisaged:
• Surrender of titles and honorary offices and resignation nominated offices
• Refusal to attend government darbars and official functions and boycott of British courts by the lawyers
• Refusal of the general public to offer themselves for military and other government jobs and boycott of foreign goods, etc.
• Apart from the educational boycott, there was a boycott of law courts, which saw major lawyers like Motilal Nehru, C.R. Das, C. Rajagopalachari, Saifuddin Kitchlu, Vallabhbhai Patel, Aruna Asaf Ali, etc. giving up their lucrative practices in their fields.

Mahatma Gandhi was awarded Kaisar-i-Hind title for raising an Indian Ambulance Corp during the Boer wars.

According to the given information,

The code for books is "3"

The code for old is "5"

The code for "are" is "2".

Hence the correct answer is Option 3: 2

The correct answer is 42

Key Points 

• The 42nd Amendment of the Indian Constitution is the most comprehensive amendment to the Constitution and carries out major changes.
• It is also known as a “mini-constitution”.

 Amendments:

• Added three new words (i.e., socialist, secular, and integrity) in the Preamble.
• Added Fundamental Duties by the citizens (new Part IV A).
• Made the president bound by the advice of the cabinet.
• Provided administrative tribunals and tribunals for other matters (Added Part XIV A).
• Froze the seats in the Lok Sabha and state legislative assemblies on the basis of the 1971 census till 2001 - Population Controlling Measure
• Made constitutional amendments beyond judicial scrutiny.
• Curtailed the power of judicial review and writ jurisdiction of the Supreme Court and high courts.
• Raised the tenure of Lok Sabha and state legislative assemblies from 5 to 6 years.
• Provided that the laws made for the implementation of Directive Principles cannot be declared invalid by the courts on the ground of violation of some Fundamental Rights.
• Added three new Directive Principles viz., equal justice and free legal aid, the participation of workers in the management of industries and protection of the environment, forests, and wildlife.
• provided for the creation of the All-India Judicial Service.
• Shortened the procedure for disciplinary action by taking away the right of a civil servant to make representation at the second stage after the inquiry (i.e., on the penalty proposed.

Additional InformationList of Fundamental Duties: 

1. Abide by the Constitution and respect the national flag and national Anthem
2. Follow the ideals of the freedom struggle
3. Protect the sovereignty & integrity of India
4. Defend the country and render national services when called upon
5. Spirit of common brotherhood
6. Preserve composite culture
7. Preserve natural environment
8. Develop scientific temper
9. Safeguard public property
10. Strive for excellence
11. Duty of all parents/guardians to send their children in the age group of 6-14 years to school.

Fundamental Duties are non-justiciable and can’t be taken to a court of law.

Thus, as per the Constitution (Eighty-sixth Amendment) Act, 2002, there are 11 fundamental duties are mentioned in the Indian Constitution.

The correct answer is Pepper.

Key Points

• The Greeks used to import pepper from India in ancient times.
• Yavanas are known as indo Greek.
• They loved pepper a lot, thus the pepper was given the name "Yavana" means people from abroad.
• "Priya" means since they enjoy pepper, it was given the name Yavanapriya.

The logic followed here is:

⇒ 3 × 2 × 4 = 24

⇒ 2 × -1 × -2 = 4

⇒ 6 × 5 × 0 = 0

Hence the correct answer is Option 2: 0

The correct answer is Sea-urchins.

Key Points

• Sea-urchins do not qualify as living fossils despite their ancient lineage, due to the significant evolutionary changes they have undergone.
• Limulas, also recognized as horseshoe crabs, are counted as living fossils because of their long geological history and slow rates of evolution.
• Sphenodon, or the tuatara, is a reptile endemic to New Zealand it is tagged as a living fossil due to its retention of many primitive features.
• Coelacanths are considered living fossils. These ancient fish, earlier known only from fossil records, were discovered as live specimens in the 20th century.

Additional Information

• The concept of living fossils involves organisms that have remained morphologically unchanged for a large span of Earth's history.
• Sea urchins, although ancient, have diversified into many modern species, indicative of extensive evolutionary changes.
• Horseshoe crabs or Limulas have survived for over 450 million years with little alteration in their body structure.
• The tuatara, or Sphenodon, has a unique lineage dating back to the Mesozoic era, over 200 million years ago, despite its resemblance to lizards.
• Coelacanths, hailing from the Late Devonian period, are termed "Lazarus species", as they were believed extinct until rediscovered alive in the modern era.

The correct answer is 1955.

Key Points

• The Citizenship Act 1955 lays down rules for the acquisition and determination of Indian citizenship.
• Enacted in 1955, this act also enables people who were once citizens of India but are now citizens of another country, among others, to apply for an Overseas Citizen of India Card.
• As per Citizenship Act, 1955 one can lose the citizenship of India in three ways: Renunciation, Termination, and Deprivation.
• Indian Citizenship can be acquired in the following ways:
• Citizenship by birth
• Citizenship by descent
• Citizenship by registration
• Citizenship by naturalization
• Citizenship by incorporation of a territory.