SSC CHSL Tier-1 2023: Official Paper (Held On: 07 Aug, 2023 Shift 4) (Previous Year Paper)

The logic followed here is:

Similarly,

Hence, 'PWZ : OUW' is the correct answer.

The logic followed here is:

Similarly,

Hence, '35' is the correct answer.

Select the correct mirror image of the given figure when the mirror is placed at MN as shown.

Hence, 'option 4' is the correct answer.

An ordinary year has 1 odd day and a leap year has 2 odd days. 

So, the day on the same date for an ordinary year will be 1 day ahead and the day on the same date for a leap year will be 2 days ahead for the next year.

If 28 May 2015 is Thursday, then the day on these dates will be:

28 May 2016 → Saturday

​28 May 2017 → Sunday

​28 May 2018 → Monday

​28 May 2019 → Tuesday

​28 May 2020 → Thursday

​28 May 2021 → Friday

​28 May 2022 → Saturday

​28 May 2023 → Sunday

Number of days between 24 April 2023 to ​28 May 2023 = (6 + 28) = 34

34 when divided by 7, leaves 6 as remainder.

Sunday - 6 = Monday

Therefore, it will be Monday on 28 May 2023.

Hence, ‘Monday’ is the correct answer.

The logic followed here is:

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

1. 8 - 72 → 8 × (8 + 2) = 8 × 10 = 80 ≠ 72
2. 11 - 143 → 11 × (11 + 2) = 11 × 13 = 143
3. 7 - 63 → 7 × (7 + 2) = 7 × 9 = 63
4. 9 - 99 → 9 × (9 + 2) = 9 × 11 = 99

Hence, '8 - 72' is the correct answer.

The logic followed here is:

Logic: (First number × 5) + 10 = Second number

1. 31 - 165 → (31 × 5) + 10 = 155 + 10 = 165
2. 24 -125 → (24 × 5) + 10 = 120 + 10 = 130 ≠ 125
3. 13 - 75 → (13 × 5) + 10 = 65 + 10 = 75
4. 19 - 105 → (19 × 5) + 10 = 95 + 10 = 105

Hence, '24 -125' is the correct answer.

The logic followed here is:

Similarly,

Hence, 'HJLN' is the correct answer.

The logic followed here is:

Logic: First letter - 2 = Second letter; Second letter - 1 = Third letter

1. TSQ → T - 2 = S; S - 2 = Q
2. JHG → J - 2 = H; H - 1 = G
3. PNM → P - 2 = N; N - 1 = M
4. XVU → X - 2 = V; V - 1 = U

Hence, 'TSQ' is the correct answer.

An ordinary year has 1 odd day and a leap year has 2 odd days. 

So, the day on the same date for an ordinary year will be 1 day ahead and the day on the same date for a leap year will be 2 days ahead for the next year.

If 20 March 2001 is Tuesday, then the day on these dates will be:

20 March 2002 → Wednesday

20 March 2003 → Thursday

20 March 2004 → Saturday

20 March 2005 → Sunday

20 March 2006 → Monday

20 March 2007 → Tuesday

20 March 2008 → Thursday

20 March 2009 → Friday

20 March 2010 → Saturday

20 March 2011 → Sunday

20 March 2012 → Tuesday

20 March 2013 → Wednesday

20 March 2014 → Thursday

20 March 2015 → Friday

20 March 2016 → Sunday

20 March 2017 → Monday

20 March 2018 → Tuesday

20 March 2019 → Wednesday

20 March 2020 → Friday

20 March 2021 → Saturday

Number of days between 20 March 2021 to 23 April 2021 = (11 + 23) = 34

34 when divided by 7, leaves 6 as remainder.

Saturday + 6 = Friday

Therefore, it will be Friday on 23 April 2021.

Hence, ‘Friday’ is the correct answer.

The logic followed here is:

Logic: (First number × 5) + 5 = Second number

• 16 : 85 → (16 × 5) + 5 = 80 + 5 = 85
• 26 : 135 → (26 × 5) + 5 = 130 + 5 = 135

Similarly,

• 37 : ? → (37 × 5) + 5 = 185 + 5 = 190

Hence, '190' is the correct answer.

The logic followed here is:

Similarly,

Hence, 'SUQP' is the correct answer.

The logic followed in the given figure series is:

From Figure (1) to (2):

The symbols are moving in a clockwise direction as shown below.

From Figure (2) to (3):

The symbols are moving in a clockwise direction as shown below.

From Figure (3) to (4):

The symbols are moving in a clockwise direction as shown below.

From Figure (4) to Answer Figure:

The symbols are moving in a clockwise direction as shown below.

Hence, the correct answer is "Option (3)".

The number of rectangles in the figure is shown below:

Hence, '12' is the correct answer.

M + U - H ÷ S × N → M is sister of U, U is mother of H, H is father of S, S is husband of N.

By using the symbols in the table given below, we can draw the following family tree:

Clearly, S is grandson of U i.e., U's son's son.

Hence, ‘Son's son’ is the correct answer.

B - D × L + T → B is brother of D, D is daughter of L, L is wife of T.

By using the symbols in the table given below, we can draw the following family tree:

Clearly, T is father of B.

Hence, ‘Father’ is the correct answer.

The logic followed here is:

Hence, 'DJJN' is the correct answer.

The logic followed here is:

Hence, '82' is the correct answer.

After replacing the letters by their meaning, we get:

118 ÷ 2 + 14 - 5 × 8 = ?

⇒ 59 + 14 - 5 × 8 = ?

⇒ 59 + 14 - 40 = ?

⇒ 73 - 40 = ?

⇒ 33 = ?

Hence, '33' is the correct answer.

The least possible Venn diagram is:          

Conclusion (I): No crane is a van. → Does not follow (As, there is no definite relation between crane and van. Hence, false)

Conclusion (II): Some vans are mixers. → Follows (As, Some mixers are trucks and All trucks are vans → Some vans are mixers)

Hence, ‘Only conclusion II follows’ is the correct answer.

58 - 17 ÷ 6 + 322 × 23 = ?

If '+' and '-' are interchanged and '×' and '÷' are interchanged, then the equation becomes:

58 + 17 × 6 - 322 ÷ 23 = ?

⇒ 58 + 17 × 6 - 14 = ?

⇒ 58 + 102 - 14 = ?

⇒ 160 - 14 = ?

⇒ 146 = ?

Hence, ‘146’ is the correct answer.

The code for each letter is shown below:

Clearly, '6' is the code for 'K' in the given code language.

Hence, ‘6’ is the correct answer.

The logic followed here is:

Hence, '235' is the correct answer.

The logic followed here is:

Logic: (First number × First number) + (First number + 1) = Second number

• 11 : 133 → (11 × 11) + (11 + 1) = 121 + 12 = 133
• 22 : 507 → (22 × 22) + (22 + 1) = 484 + 23 = 507

Similarly,

• 16 : ? → (16 × 16) + (16 + 1) = 256 + 17 = 273

Hence, '273' is the correct answer.

The correct mirror image of the given figure when the mirror is placed at MN is shown below:

Hence, ‘option 2’ is the correct answer.

The logic followed here is:

1. FGVA → DEFG / YUAG / TKVG / OAQA
2. VGFA → DEVG / YUAG / TKFG / OAQA
3. FGVG → DEFG / YUAG / TKVG / OAQG
4. BCHL → DEBG / YUAC / TKHG / OAQL

• Option 3, when divided into four equal parts, follows the pattern shown below:

Hence, ‘FGVG’ is the correct answer.

The correct answer is Rourkela, Odisha.

Key Points 

• Birsa Munda International Hockey Stadium:-
• It is the largest hockey stadium in the country, with a seating capacity of 15,000.
• It was built in 2010 for the Men's Hockey World Cup and has since hosted several international hockey tournaments.
• The stadium has state-of-the-art facilities, including a synthetic turf and floodlights for night matches.
• The Birsa Munda International Hockey Stadium is located in Rourkela, Odisha, India.

The correct answer is Dhansiri.

Key Points

• Meghalaya plateau:-
• It is a geological formation located in the northeastern region of India.
• It is divided into three main subdivisions: Khasi, Jaintia, and Garo.
• These subdivisions are named after the major ethnic groups that inhabit them.
• The Dhansiri river is not a subdivision of the Meghalaya plateau. It is a river that flows through the states of Assam and Nagaland.
• The Meghalaya plateau is known for its unique landscape, which includes hills, valleys, and caves. It is also home to a rich variety of flora and fauna.

 Additional Information

• Khasi Hills:-
• These are the largest subdivision of the Meghalaya plateau and are known for their scenic beauty and cultural significance.
• Jaintia Hills:-
• These are located to the east of the Khasi Hills and are known for their coal deposits and limestone caves.
• Garo Hills:-
• These are located to the west of the Khasi Hills and are known for their wildlife sanctuaries and national parks, which are home to several endangered species.

The correct answer is 1966 to 1969 which is described as Plan Holiday.

Key Points

• Plan Holiday:-
• The period from 1966 to 1969 in India is known as the Plan Holiday because during this time the government put a pause on the Five-Year Plans that had been implemented since independence.
• The Plan Holiday was a result of the economic crisis faced by India due to two consecutive years of drought and the Indo-Pak War of 1965.
• During this period, the government focused on stabilizing the economy and implementing policies to promote self-sufficiency.
• The Plan Holiday was followed by the Fourth Five-Year Plan (1969-1974) which focused on poverty alleviation and employment generation.

Additional Information

• Period of 1990 to 1993:-
• It refers to the period when India faced a balance of payment crisis and the government implemented economic reforms under the leadership of then-Finance Minister Manmohan Singh.
• Period of 1956 to 1960:-
• It was the Second Five-Year Plan period which focused on industrialization and agriculture.
• Period of 1947 to 1950:-
• It  was the immediate post-independence period when the government focused on reconstruction and development.

The correct answer is 30%.

 Key Points

• Horizontal reservation:-
• It refers to the reservation of seats in a particular category across all levels of employment or education.
• It is distinct from vertical reservation, which provides reservations for specific social groups, such as Scheduled Castes and Scheduled Tribes.
• The 30% horizontal reservation for women in the government jobs bill of Uttarakhand was approved by Governor Gurmit Singh on January 10, 2023.

The correct answer is Alfiya Pathan.

Key Points

• Alfiya Pathan:-
• She won the gold medal in the 81kg category at the 1st Edition of Elorda Boxing Cup 2022 held in Kazakhstan.

Additional Information

• Mary Kom:-
• She is a six-time world champion and an Olympic bronze medalist.
• She has won several medals at the Asian Games and Commonwealth Games as well.
• Lovlina Borgohain:-
• She is a bronze medalist at the 2018 Asian Games and a silver medalist at the 2019 AIBA Women's World Boxing Championships.
• Nikhat Zareen:-
• She is a former junior world champion and a silver medalist at the 2019 Strandja Memorial Boxing Tournament.
• She has also won several medals at the national and international level.

The correct answer is Morris Jones.

 Key Points

• ​Bargaining federalism:-
• It refers to a system where the central government and the state governments negotiate and bargain with each other to share power and resources.
• Morris Jones described Indian federal system as a bargaining federalism.

Additional Information

• KC Wheare:-
• He is known for his book "Federal Government" and is considered as the father of federalism.
• Ivor Jennings:-
• He was a British jurist who served as the Governor-General of India and is known for his work on the Indian Constitution.
• Granville Austin:-
• He was an American historian who wrote extensively on the Indian Constitution and is known for his book "The Indian Constitution: Cornerstone of a Nation".

The correct answer is GNP at factor cost - NNP at factor cost- Personal income - Personal disposable income.

Key Points

• GNP at factor cost:-
• It is the broadest concept of national income as it includes all income earned by domestic factors of production, regardless of their location.
• NNP at factor cost:-
• It is a narrower concept as it deducts depreciation from GNP at factor cost.
• Personal income:-
• It is even narrower as it only includes income received by individuals and households.
• Personal disposable income:-
• It is the narrowest concept as it deducts personal taxes and non-tax payments from personal income.

The correct answer is Meghalaya.

Key Points

• Laho:-
• It is a traditional folk dance of Meghalaya, which is performed by the Khasi tribe during their festivals and ceremonies.
• The dance form is characterized by a group of dancers moving in a circular motion and performing intricate steps and gestures.
• The dancers wear colorful traditional attire, and the music is typically played using instruments such as drums and flutes.
• The dance is considered to be a form of worship and is often performed to seek blessings from the gods and ancestors.

The correct answer is Amjad Ali Khan.

Key Points

• Sarod:-
• It is a stringed musical instrument that originated in India.
• It is similar to the Western lute, but with a shorter neck and a wider fingerboard.
• The instrument has a resonating chamber made of wood, and its strings are plucked with a plectrum made of coconut shell.
• Amjad Ali Khan is associated with Sarod.

Additional Information

• Zakir Hussain:-
• He is a renowned tabla player from India who has collaborated with many international musicians.
• Allahrakha:-
• He was a famous tabla player and percussionist who was known for his work with Ravi Shankar and other Indian classical musicians.
• Khayyam:-
• He was a Bollywood music composer who passed away in 2019.
• He was known for his work in films like Kabhie Kabhie and Umrao Jaan.

The correct answer is LEDP.

Key Points

• Livelihood Enterprise Development Programme:-
• NABARD launched the Livelihood Enterprise Development Programme (LEDP) in 2015 to promote the livelihood of people in both farm and off-farm activities.
• LEDP provides financial assistance and capacity building to individuals and groups for setting up and running small enterprises.
• LEDP focuses on promoting entrepreneurship and income generation among rural youth, women, and marginalized communities.
• LEDP also aims to enhance the productivity and competitiveness of small and micro-enterprises in rural areas.

Additional Information

• LWE (Left Wing Extremism):-
• It is a government initiative to address the issue of Maoist insurgency in certain parts of India.
• MEDP (Micro Enterprise Development Programme):-
• It  is a scheme of NABARD to provide financial assistance to micro-enterprises.
• BLP (Bank Linkage Programme);- 
• ​It was launched in early 1990s.
• The programme was started at the initiative of NABARD in 1992 to link the unorganised sector with the formal banking sector.

The correct answer is Services.

Key Points

• Raja Bhalindra Singh trophy:-
• Services team won the Raja Bhalindra Singh trophy at the 36th National Games.
• The Raja Bhalindra Singh trophy is awarded to the overall champion team of the National Games, which is held once in four years and is the most prestigious multi-sport event in India.
• Services team is known for its strong sports culture and has consistently performed well in various national and international competitions. It has won the Raja Bhalindra Singh trophy multiple times in the past as well.
• Winning the Raja Bhalindra Singh trophy is a matter of great pride for any team as it signifies their overall excellence and dominance in various sports disciplines.

The correct answer is Bihu.

Key Points

• Bihu:-
• It is a festival and dance that is celebrated in the state of Assam, India.
• It is celebrated to mark the beginning of the Assamese New Year and the onset of the agricultural season.
• The festival is characterized by traditional Bihu dances and music, which involve the use of instruments such as dhol, pepa, and taal.
• Bihu is typically celebrated in mid-April and is a time of joy and festivity for the people of Assam.

 Additional Information

• Baisakhi:-
• It is a festival celebrated in North India, particularly in Punjab, to mark the harvest season and the beginning of the Sikh New Year.
• Ugadi:-
• ​It is a festival celebrated in South India, particularly in the states of Andhra Pradesh, Telangana, and Karnataka, to mark the New Year and the onset of spring.
• Pongal:-
• It​ is a festival celebrated in Tamil Nadu to mark the harvest season and the beginning of the Tamil New Year.

The correct answer is Aniline.

Key Points

• Aniline:-
• It is the organic chemical compound that is reacted with nitrous acid at 273-278K to prepare benzenediazonium chloride.
• Benzene diazonium chloride is an important intermediate in organic synthesis used for the preparation of various organic compounds.

 Additional Information

• Hydrazine:-
• It is a colorless and flammable liquid used as a rocket propellant and in the production of pharmaceuticals and agricultural chemicals.
• Toluene:-
• It is a clear and colorless liquid used as a solvent, fuel, and in the production of chemicals such as benzene, trinitrotoluene, and benzoic acid.
• Pyridine:-
• It is a colorless liquid with a distinctive odor used as a solvent and in the production of various chemicals such as pesticides, drugs, and vitamins.

The correct answer is Nasiruddin Mahmud.

Key Points

• Nasiruddin Mahmud:-
• He was a sultan of Delhi who ruled from 1246 to 1266, and Balban served as his naib during his reign.
• Balban's service as naib to Nasiruddin Mahmud was a crucial step in his rise to power, as he was able to gain experience in governance and military affairs.
• During his tenure as naib, Balban was instrumental in quelling rebellions and consolidating the sultan's authority.
• After Nasiruddin Mahmud's death, Balban was able to use his position and influence to become sultan himself in 1266.

Additional Information

• Iltutmish:-
• He was the father of Razia and a prominent sultan of Delhi himself, ruling from 1211 to 1236.
• Razia:-
• She was the daughter of Iltutmish and the first and only female sultan of Delhi, ruling briefly from 1236 to 1240.
• Qutb ud-Din Aibak:-
• He was the first sultan of Delhi, ruling from 1206 to 1210. Balban did not serve under him as naib.

The correct answer is Pteridophyta.

Key Points

• Cryptogam:-
• It refers to a group of plants that do not have visible reproductive structures, such as flowers or seeds.
• Pteridophyta:-
• It is a division of plants that includes ferns, horsetails, and clubmosses, which reproduce through spores and do not have flowers or seeds.

Additional Information

• Gymnosperm :-
• ​It refers to a group of plants that have naked seeds, such as conifers, cycads, and ginkgoes.
• Dicots and Angiosperms:-
• These belong to the division Magnoliophyta, which includes plants that have seeds enclosed in fruits or flowers, such as flowering trees, shrubs, and herbs.

The correct answer is Phobos and Deimos.

Key Points

• The two small moons orbiting Mars discovered by American astronomer Asaph Hall in 1877 are Phobos and Deimos.
• Phobos:-
• It is the larger of the two moons, and its name means "fear" in Greek mythology.
• Deimos:-
• It is smaller than Phobos and its name means "panic" in Greek mythology.
• Both Phobos and Deimos are irregularly shaped and are thought to be captured asteroids or fragments of the Martian crust.

Additional Information

• Miranda and Triton are moons of Uranus and Neptune.
• Enceladus and Titan are moons of Saturn, and Charon and Dysnomia are moons of Pluto.

The correct answer is Table Tennis Federation of India.

Key Points

• Meghana Ahlawat:-
• She was elected as the President of Table Tennis Federation of India in December 2022.
• Table Tennis Federation of India:-
• It is the governing body for table tennis in India and is responsible for organizing national and international events, selecting teams for international tournaments, and promoting the sport in the country.

Additional Information

• BCCI:-
• Board of Control for Cricket in India is the national governing body for cricket in India and is responsible for organizing domestic and international cricket tournaments, selecting teams for international tournaments, and promoting the sport in the country.
• Hockey India:-
• It is the governing body for field hockey in India and is responsible for organizing national and international events, selecting teams for international tournaments, and promoting the sport in the country.
• Wrestling Federation of India:-
• It is the governing body for wrestling in India and is responsible for organizing national and international events, selecting teams for international tournaments, and promoting the sport in the country.

The correct answer is Golden Quadrilateral.

 Key Points

• Golden Quadrilateral:-
• It is a highway network connecting the major cities of Delhi, Mumbai, Chennai, and Kolkata.
• It is a part of the National Highways Development Project (NHDP) and was completed in 2012.
• The Golden Quadrilateral covers a distance of 5,846 km and is one of the longest highways in the world.
• The project was initiated by the government to improve the transportation infrastructure in the country and boost economic growth.

Additional Information

• North-South Corridor of NHDP:-
• It is a different highway project that connects Srinagar in the north to Kanyakumari in the south.
• National Highway 44:-
• It connects Srinagar to Kanyakumari via Delhi.
• National Highway 47A:-
• It connects Salem to Kochi in the south.

The correct answer is G Parthasarathi.

Key Points

• G Parthasarathi:-
• He was the first Vice-Chancellor of Jawaharlal Nehru University (JNU) in 1969.
• JNU was established in 1966 and G Parthasarathi played a significant role in shaping the university.
• Prior to his appointment as Vice-Chancellor, G Parthasarathi had served as India's ambassador to the United States.
• He was also a renowned scholar and had authored several books on international relations and foreign policy.

Additional Information

• BD Nagchaudhuri:-
• He was the second Vice-Chancellor of JNU, succeeding G Parthasarathi in 1972.
• Y Nayudamma:-
• ​Y Nayudamma was a scientist.
• ​KR Narayanan:-
• KR Narayanan was the President of India from 1997-2002.

The correct answer is Kottakkal Nandakumaran Nair.

Key Points

• Kottakkal Nandakumaran Nair:-
• He received the Sangeet Natak Akademi Award of 2019 in the Kathakali classical dance category.
• He is a renowned Kathakali artist from Kerala.
• He has also won other prestigious awards like the Padma Shri and Kerala Sangeetha Nataka Akademi Award.

Additional Information

• OS Arun:-
• He is a Carnatic music vocalist who has won several awards including the Sangeet Natak Akademi Award in the Carnatic vocal music category in 2018.
• Manju Nandan Mehta:-
• He is a renowned theatre director and actor who has won several awards for his contribution to theatre.
• Vinayak Torvi:-
• He is a Hindustani classical vocalist who has won several awards for his contribution to music.

The correct answer is Bihar.

Key Points

• According to the Census of India 2011:-
• Bihar has the lowest literacy rate among all states in India.
• The literacy rate in Bihar was recorded at 63.82% in the 2011 census, which is significantly lower than the national average of 74.04%.
• This indicates that there is a significant gap in education and literacy levels between Bihar and other states in India.
• The state government has implemented several initiatives to improve the literacy rate, such as the Bihar Education Project and the Sarva Shiksha Abhiyan.

Additional Information

• Jharkhand:
• Jharkhand has a literacy rate of 66.41%, which is higher than Bihar but still lower than the national average.
• The state has made efforts to improve education through schemes like the Mukhyamantri Sukanya Yojana and the Jharkhand Education Project.
• Rajasthan:
• Rajasthan has a literacy rate of 66.11%, which is again lower than the national average.
• The state government has implemented several initiatives to improve education, such as the Bhamashah Yojana and the Rajasthan Education Initiative.
• Arunachal Pradesh:
• Arunachal Pradesh has a literacy rate of 66.95%, which is higher than both Jharkhand and Rajasthan but still lower than the national average.
• The state has made efforts to improve education through initiatives like the Arunachal Pradesh Education for All Project and the Chief Minister's Universal Health Insurance Scheme.

The correct answer is Reserve Bank of India.

Key Points

• Reserve Bank of India:-
• RBI is responsible for issuing all currency notes in India, including undefined10 notes.
• The RBI was established in 1935 and is India's central bank, responsible for regulating the country's monetary policy and managing its currency reserves.

Additional Information

• State Bank of India:-
• It is a public sector bank that offers various financial services, including deposit accounts, loans, and credit cards.
• It has a wide network of branches and ATMs across India and also operates in other countries.
• Union Bank of India:-
• It is another public sector bank that provides banking and financial services to its customers.
• It offers services such as savings accounts, loans, and credit cards and has a presence in various parts of India.
• Central Bank of India:-
• It is a public sector bank that offers banking and financial services to its customers.
• It provides services such as savings accounts, loans, and credit cards and has a network of branches and ATMs across India.

The correct answer is Export plus import expenditure.

Key Points

• The expenditure method of measuring national income involves adding up the final expenditures made by households, firms, governments, and foreigners.
• Final investment expenditure by firms and final government expenditure are correctly stated components of the expenditure method.
• Final consumption expenditure by households is also a correctly stated component of the expenditure method.
• Export plus import expenditure, is a component of the expenditure method, but is NOT correctly stated. This should have been export-import expenditure, which is known as net exports.

Additional Information

• Final investment expenditure by firms:-
• It refers to the amount spent by businesses on capital goods, such as machinery and equipment, that are used to produce goods and services.
• Final government expenditure:-
• It includes all spending by the government on goods and services, such as salaries of public employees and infrastructure projects.
• Final consumption expenditure by households:-
• It is the total amount spent by individuals and families on goods and services for personal use, such as food, clothing, and housing.
• Net exports:-
• These are the difference between the value of exports (goods and services sold to foreign countries) and imports (goods and services purchased from foreign countries).

The correct answer is 2-Propen-1-amine.

Key Points

• Allylamine:-
• It is a primary amine with the chemical formula  C₃H₅NH2.
• It is a colorless liquid with a pungent odor and is highly soluble in water.
• Allylamine is used in the production of a wide range of pharmaceuticals, including antihistamines, antifungal agents, and anticancer drugs.
• It is also used in the manufacture of various chemicals, including pesticides, resins, and plastics.

Additional Information

• Propan-1-amine:-
• It refers to a different compound with a different molecular structure.
• Benzenamine:-
• It refers to an entirely different compound with a benzene ring in its structure.
• N-Methylethanamine:-
• It refers to a compound with a different molecular formula and structure.

The correct answer is Australia.

Key Points

• Concurrent List:-
• It is a list of subjects that are under the jurisdiction of both the central and state governments.
• This means that both levels of government can make laws on these subjects.
• Australia also has a similar system of federalism, where powers are divided between the central government and the states.
• In fact, Australia was one of the countries that served as a model for the Indian Constitution.
• The Indian Constitution was drafted by a Constituent Assembly that was heavily influenced by the British parliamentary system and the federal structure of the United States. However, it also drew inspiration from other countries, including Australia.
• The Concurrent List was added to the Indian Constitution through the Constitution (Seventh Amendment) Act, 1956. This amendment was based on the recommendation of the States Reorganisation Commission, which was set up in 1953 to examine the issues related to the reorganisation of states in India.

Given:

Total Workforce = 7200

Total number of employees hired = 324

Percentage of hiring in IT department of of total hired = 25%

Calculation:

⇒ Number of IT employees before hiring = 30% of 7200 = (3/10) × 7200 = 2160

⇒ Increase in the number of IT employees after hiring = 25% × 324 = (1/4) × 324 = 81

∴  Percentage increase in the number of IT employee = (81/2160) × 100 = 3.75%

Hence, the correct answer is Option 1).

Concept used

Income = Expenditure + Savings

Calculation

Let the income be 100x.

His expenditure = 100x × 45/100 = 45x

Savings = 100x - 45x = 55x

New income = 100x × 115/100 = 115x

New saving = Old saving = 55x

New Expenditure = 115x - 55x = 60x

Expenditure increase% = (60x - 45x)/45x × 100

= 15x/45x × 100

= 100/3 = 33.33%

The answer is 33.33%

Formula used

a³  + b³ = (a + b)(a² -ab + b²)

Calculation

$\frac{(0.96×0.96×0.96+0.04×0.04×0.04)}{(0.96×0.96-0.96×0.04+0.04×0.04)}$

Let a = 0.96 and b = 004

Applying the above formula:

⇒ (a³ + b³)/((a2 -ab + b2) = a + b

⇒ (0.963 + 0.043)/((0.962 - 096 × 0.04 + 0.042) = 0.96 + 0.04

⇒ 1

The answer is 1.

Formula Used:

a³ + b³ + c³ - 3abc = (a + b +c)(a² + b² + c² - ab - bc - ca)

Calculation:

⇒  $\frac{x^3+y^3+z^3-3xyz}{(x-y)^2+(y-z)^2+(z-x)^2}$

Using the above formula we get,

⇒ $\frac{(x + y + z)(x^2 + y^2 + z^2 -xy - yz - xz)}{(x^2 + y^2 - 2xy + y^2 + z^2 - 2yz + z^2 + x^2 - 2zx)}$

⇒ $\frac{(x + y + z)(x^2 + y^2 + z^2 -xy - yz - xz)}{2(x^2 + y^2 + z^2- xy - yz - zx)}$

⇒ 1/2 (x + y + z)

Hence, The correct answer is Option 4).

Given:

Divisor = 11 × Quotient

Divisor = 5 × Remainder

Remainder = 44

Formula Used:

Dividend = Divisor × Quotient + Remainder

Calculation:

⇒ Divisor = 5 × Remainder = 5 × 44 = 220

⇒ Quotient = Divisor/11 = 220/11 = 20

∴  Dividend = 220 × 20 + 44 = 4444

Hence, The correct answer is option 4)

Formula used:

Mean proportion = Square root of the product of the given numbers

Calculations:

Mean proportion = √(7 × 63) 

⇒ Mean proportion = √441 = 21

According to the question,

24 - 21 = 3

∴ The correct answer is 3.

Given:

$\frac{sin^232^\circ + sin^2 58^\circ }{cos^232^\circ + cos^2 58^\circ}$ + sin² 53° + cos 53° sin 37° 

Formula used:

sin²θ + cos²θ = 1

sinθ = cos(90° - θ) 

cosθ = sin(90° - θ) 

Calculation:

$\frac{sin^232^\circ + sin^2 58^\circ }{cos^232^\circ + cos^2 58^\circ}$ + sin2 53° + cos 53° sin 37° 

⇒ $\frac{sin^232^\circ + sin^2 (90^\circ-32^\circ) }{cos^232^\circ + cos^2(90^\circ- 32^\circ)}$ + sin² 53° +  cos 53° sin (90° -  53°)

⇒ $\frac{sin^232^\circ + cos^2 32^\circ }{cos^232^\circ + sin^232^\circ}$ + sin2 53° +  cos 53° cos 53°

⇒ 1 / 1 + sin2 53° +  cos² 53°

⇒ 1 + 1 = 2

∴ The correct answer is 2.

Given:

A vertical pillar 42 cm long casts a 35 cm long shadow.

Concept Used:

The ratio of the height of an object and the length of it's shadow is fixed at any fixed time of the day.

Calculation:

Let the height of the tower be h.

Ratio of height of the pillar and its shadow,

⇒ 42 : 35 = 6 : 5

Let the height of the tower be h,

Ratio of height of the tower and its shadow,

⇒ h : 25 = 6 : 5

⇒ h = 30

∴ The height of the tower is 30 m.

Concpet:

Tangents drawn from an external point are perpendicular to the radius at the point of contact

Calculation:

Given, TM and TN are tangents.

 ∠MON = 105°

Now, angle in a quadrilateral = 360°

⇒ ∠ MON + ∠ ONT + ∠ MTN + ∠ TMO = 360° 

⇒ 105°  + 90°  +  90°  + ∠ MTN =  360° 

⇒ ∠ MTN = 75° .

Given:

Cost per box of grapes: ₹2,000

Number of boxes: 10

Weight per box: 20 kg

Selling Price per box: ₹2,500

Damaged Grapes: 10 kg

Transport charges: ₹1,000

Formula used:

Total Cost Price = Cost per box × Number of boxes + Transport charges

Total Selling Price = Selling Price per box × (Number of boxes - Damaged weight in terms of boxes)

Calculation:

⇒ Total Cost Price = ₹2,000 × 10 + ₹1,000 = ₹20,000 + ₹1,000 = ₹21,000

Since 10 kgs were damaged and each box contains 20 kgs, the damaged boxes in terms of boxes = 10 kg / 20 kg per box = 0.5 box

⇒ Actual sold boxes = 10 boxes - 0.5 boxes = 9.5 boxes

⇒ Total Selling Price = ₹2,500 × 9.5 = ₹23,750

Gain = Total Selling Price - Total Cost Price

⇒ Gain = ₹23,750 - ₹21,000 = ₹2,750

Hence, his gain is ₹2,750.

Given:

Downstream speed of ship = 18 km/h

Upstream speed of ship = 16 km/h

Formula used:

Upstream = (u−v) km/hr

Downstream = (u+v) Km/hr, [where “u” is the speed of the boat in still water and “v” is the speed of the stream]

Calculation:

⇒ u - v = 18        -----(1)

⇒ u + v = 16       -----(2)

The sum of equation 1 & 2 

⇒ 2u = 34

⇒ u = 17 km/h.

The speed of the ship in still water = 17 km/h

Given:

Principal (P) = Rs 160000

Rate (R) = 10%

Time (T) = 2 years

Concept used:

Interest is calculated semi-annually (half-yearly) then

R = R/2 and T = 2T

Formula used:

Amount (A) = P × (1 + (R/100))^T

Compound interest (CI) = A - P

Calculation:

Here interest is calculated half-yearly then,

⇒ R = 10/2 = 5% and T = 2 × 2 = 4 years

Now,

⇒ A = 160000 × (1 + (5/100))⁴

⇒ A = 160000 × (21/20)⁴

⇒ A = 194481

⇒ CI = 194481 - 160000 = 34481

∴ The correct answer is Rs 34,481.

Given:

Diameter (D) = 58 cm

Perpendicular distance from the centre of a circle to chord = 20 cm

Concept used:

Perpendicular drawn from the centre of a circle on any chord, bisect chord in two equal parts

Formula used:

D = 2R

From pythagoras theorem, c² = a² + b²

Calculation:

Let AB is chord, OD is perpendicular to chord and OB is radius of circle

Now,

⇒ OB = D/2 = 58/2 = 29 cm

⇒ OD = 20 cm

In right triangle ODB

⇒ DB = √(OB² - OD²) = √(29² - 20²) {29, 21 and 20 are triplet}

⇒ DB = √441 = 21 cm

⇒ Chord AB = 2 × DB = 2 × 21 = 42 cm

∴ The correct answer is 42 cm.

Calculation:

From above given table data

⇒ Students E has least weight(48 kg) and height(1.12 m) among all

∴ The correct answer is option 3.

Given:

Sum of money becomes ₹6,000 in 3 years

And ₹10,500 in 7 years and 6 months 

Formula used:

Simple Interest = (P × R × T)/100

Where, P is the principal, R is the rate and T is the time.

Calculation:

According to the question,

Simple interest for 4.5 years is = 10500 - 6000 = 4500

Simple interest for 1 years becomes, 4500/4.5 = 1000 

And Simple interest for 3 years = 1000× 3 = 3000

As, we know Total Amount = Simple interest + Principal 

⇒ 6000 = 3000 + Prinicipal

⇒ Prinicipal = 3000 

Using the formula,

⇒ 3000 = (3000 × R × 3 )100

⇒ R = 100/3 = $33\frac{1}{3}\%$

∴ The rate of interest is $33\frac{1}{3}\%$.

Given: 

Marked price of toothpaste, MP = Rs. 90 

Selling price of toothpaste, SP = Rs. 78

Formula used:

Discount% = [(MP - SP)/MP] × 100

Where, MP is the marked price and SP is the selling price.

Calculation:

Discount% = [(90 - 78)/90] × 100       

⇒ (12/90) × 100 = 13.33%

∴ The rate of discount is 13.33%

Concept used:

sin 45° = 1/√2 ,  cosec 45° = √2 and cot 45° = 1

Calculation:

$\frac{1}{\sinθ}-\frac{\cot^2θ}{1+cosec,θ}$

Put θ = 45° we get,

⇒ $√{2} - \frac{1}{1+√{2}}$

⇒ $√{2} - \frac{√{2}-1}{(√{2}+1)\times (√{2}-1)}$

⇒ √2 - (√2 -1) = 1

∴ The correct option is (2).

Given :

sin58° /cos32° + (sin55° sec35° )/(tan5° tan45° tan85° )

Formula used  :

If A+B = 90°  then,

sinA × cosB = 1

Calculation : 

⇒ sin58° /cos32° + (sin55° sec35° )/(tan5° tan45° tan85° )

⇒ sin58° /sin58° + (sin55° sec35° )/(tan5° ° tan85° )

⇒ 1 + (sin55° cosec55° )/(tan5° ° tan85° )

⇒ 1 +  1 = 2

Hence, the correct option (1).

Given ; 

Edge of cube = $3\frac12$ cm

Formula used :

The volume of the cone (V) = $\frac13$πr²h

Concept used :

Here, the height and the diameter are the same as the edge because the cone will have the same measurement all over its surface as the edge.

Calculation :

Edge of cone = $3\frac12 cm$ = 7/2

The radius of cone = 7/4

Height of cone = $3\frac12$

⇒ Volume = (1/3)π( 7/4)²(7/2)

⇒ V = (1/3)π( 7/4)2(7/2)

⇒ V = (1/3)π( 7/4)2(7/2) = (22 × 7³) / (3 × 7× 32)

⇒ V = 7,546 / 672 = 11.229 cm³

Hence, the correct option (3).

Shortcut Trick

When a diameter is perpendicular to a chord, it bisects the chord: RT = TS = 16 ÷ 2 = 8 cm.

According to the Intersecting Chords Theorem, RT × TS = PT × TQ.

⇒ 8 × 8 = PT × 4

⇒ PT = 64 ÷ 4 = 16 cm.

⇒ Diameter PQ = PT + TQ = 16 + 4 = 20 cm.

∴ The correct answer is 20 cm.

Alternate Method

Given: Chord RS = 16 cm, PQ ⊥ RS at T, QT = 4 cm.

Formula Used: Pythagoras Theorem: Hypotenuse² = Base² + Perpendicular²

⇒ Let the radius of the circle be r cm.

⇒ In ▵OTR, OR is the radius, so OR = r.

⇒ Since PQ is the diameter, OQ = r. Given QT = 4 cm, OT = OQ − QT = r − 4.

⇒ RS is bisected by the diameter at T, so RT = 16 ÷ 2 = 8 cm.

⇒ By Pythagoras Theorem in ▵OTR: OR² = OT² + RT²

⇒ r² = (r − 4)² + 8²

⇒ r² = r² − 8r + 16 + 64

⇒ 8r = 80

⇒ r = 10 cm

⇒ Diameter = 2 × r = 2 × 10 = 20 cm.

∴ The correct answer is 20 cm.

Additional Information

Perpendicular from Center

A perpendicular drawn from the center of a circle to a chord always bisects the chord into two equal segments.

Intersecting Chords Theorem

For two chords intersecting at a point T inside a circle, the product of the segments of one chord equals the product of the segments of the other: AT × TB = CT × TD.

Radius and Diameter

The diameter is the longest chord of a circle and its length is exactly twice the length of the radius (D = 2r).

Calculation

The average production of wheat = (720 + 680 + 790 + 690)/4

= 2880/4

= 720

The average production of pulses = (410 + 380 + 320 + 250)/4

= 1360/4  

= 340

Difference = 720 - 340 = 380

The answer is 380.

Shortcut Trick

Given equation: x − 1/(x − 2) = 7

Subtract 2 from both sides: (x − 2) − 1/(x − 2) = 5

Let (x − 2) = k. Then k − 1/k = 5.

The required value is k³ − 1/k³ = k³ + 3k

Shortcut: 5³ + 3 × 5 = 125 + 15 = 140

∴ The correct answer is 140.

Alternate Method

Given: x − 1/(x − 2) = 7

Formula Used: (a − b)³ = a³ − b³ − 3ab(a − b)

⇒ Let m = (x − 2)

⇒ x = m + 2

⇒ (m + 2) − 1/m = 7

⇒ m − 1/m = 7 − 2 = 5

⇒ Cubing both sides: (m − 1/m)³ = 5³

⇒ m³ − 1/m³ − 3 × m × (1/m) × (m − 1/m) = 125

⇒ m³ − 1/m³ − 3(5) = 125

⇒ m³ − 1/m³ = 125 + 15

⇒ (x − 2)³ − 1/(x − 2)³ = 140

∴ The correct answer is 140.

Additional Information

Cubic Identity (Plus)

If x + 1/x = k, then x³ + 1/x³ = k³ − 3k.

Square Identity

If x − 1/x = k, then x² + 1/x² = k² + 2. If x + 1/x = k, then x² + 1/x² = k² − 2.

Power 4 Relation

If x + 1/x = k, then x⁴ + 1/x⁴ = (k² − 2)² − 2.

Concept used

Ratio

Calculation

The quantity of Aluminium in first alloy = 242 × 5/11 = 110

The quantity of Aluminium in second alloy = 144 × 3/8 = 54

Total Aluminium = 110 + 54 = 164

The quantity of Zinc in first alloy = 242 × 6/11 = 132

The quantity of Zinc in second alloy = 144 × 5/8 = 90

Total Zinc = 132 + 90 = 222

Ratio = 164:222 = 82: 111

The answer is 82: 111

Formula used

Time taken = (a × b)/(a - b)

Where a = time taken together to complete work and b = time taken alone

Calculation

Time taken = ( 6 × 4)/(6 - 4)

= 24/2 = 12 days

The answer is Gita does the job alone in 12 days.

Given:

Cost price of air conditioner = 24000.

Selling price of air conditioner = 30000.

Profit % = 9 %

Concept Used:

SP = MP - MP× Discount %

SP = CP + CP× Profit %

Discount = MP - SP

Discount% = discount% / MP × 100

Calculation:

If profit is 9% then, we get 

⇒ SP = 24000 + 24000 × 9%

⇒ SP = 24000 + 24000 × 9 / 100 = 26160.

We know discount formula then, we get 

⇒ Discount = 30000 - 26160 = 3840

We know discount percentage formula then, we get 

⇒ Discount% = 3840/30000 × 100 = 12.8%

∴ The rate of discount given by the shopkeeper to the customer is 12.8%.

The correct answer is "Two masked intruders had robbed the agency."

 Key Points

• The given sentence is in Past Perfect Tense and Active Voice.
• The rule for changing a Past Perfect Tense from Active voice to Passive voice:
• In the passive voice, the object of the active sentence becomes the subject of the passive sentence, and the verb is changed to its past participle form.
• Structure: 
• Object + had + been + V3 + by + Subject (Passive Voice)
• Subject + had + V3 + Object (Active Voice)
• Example: 
• The things had been arranged by Disha. (Passive Voice)
• Disha had arranged the things. (Active Voice)
• The sentence is in passive voice with the subject 'agency' performing the action 'robbing.'
• To convert it into active voice, we need to make the object 'two masked intruders' the subject and use the past participle form of the verb 'rob.'
• In this case, we use the past perfect tense 'had been robbed' to show that the action was completed before another past event (day breaking).
• The correct answer is Option 3.
  

Correct sentence: Two masked intruders had robbed the agency.

The correct answer is "Superficial."

 Key Points

• "Intensive" means involving a lot of effort or activity, or very thorough or detailed. (जिसमें सीमित समय में काफ़ी अधिक कार्य या सावधानी की अपेक्षा हो; गहन, प्रबलित)
• Example: We're in the midst of intensive negotiations.
• "Superficial," on the other hand, means shallow or lacking depth, or only concerned with surface appearances. (जिसे गहराई से या पूर्णता में न जाना या सोचा गया हो; छिछला, उथला)
• Example: He's fun to be with, but he's very superficial.
• Therefore, Superficial is the antonym of Intensive.
• The correct answer is Option 4.
  

Additional Information

• Real (Option 1) means genuine or authentic. (असली, वास्‍तविक, काल्‍पनिक नहीं)
• Dare (Option 2) means to have the courage to do something. (साहस करना)
• Fierce (Option 3) means aggressive or intense. (क्रुद्घ, आक्रामक और डरावना; बर्बर)

Here, the correct part is "to an range of health problems."

Key Points

• The error lies in the part "to an range of health problems."
• The incorrect use of the article "an" before the word "range" is incorrect.
• The word "range" starts with a consonant sound, so we must use "a" before "range."
• The correct answer is Option 4.
  

Correct sentence: A lot of adulterants are chemicals that can lead to a range of health problems in both children and adults.

The correct answer is "in front of him."

 Key Points

• The error lies in the part "at the front of him."
• "In front of" is the correct preposition to use when describing the location of someone or something that is directly ahead.
• The other options do not make grammatical sense in this context.
• The correct answer is Option 4.
  

Correct sentence: The invigilator did not know that the four friends were exchanging notes right in front of him.

The correct answer is "Chaotically."

 Key Points

• The word "meticulously" means to do something with great care and attention to detail. (किसी कार्य को बहुत सावधानी से और विस्तार से ध्यानपूर्वक करना)
• Example: The entire project was meticulously planned.
• The antonym of "meticulously" is "chaotically."
• "Chaotically" means in a disorganized or messy way. (अव्यवस्थित या गन्दे तरीके से)
• Example: Everyone spoke rapidly and chaotically as we were guided through the village.
• Therefore, the sentence would mean that the preparations for the picnic were not completed carefully or on time.
• The correct answer is Option 3.

Additional Information

• Option 1, "Mesmerisingly", means in a captivating or enchanting way. (मनोरम या मनमोहक ढंग से)
• Option 2, "Prudently", means in a careful or cautious way. (बुद्धिमानी से)
• Option 4, "Serenely", means in a calm and peaceful way. (स्थिरता से)

The correct answer is "Stricken."

 Key Points

• "Stricken" means seriously affected by an unpleasant feeling or disease or by a difficult situation. ((किसी अप्रिय भावना, रोग या कठिन परिस्थिति से) ग्रस्‍त)
• Example: We went to the aid of the stricken boat.
• So, the one word for "affected by an undesirable condition or unpleasant feeling" is "stricken."
• The correct answer is Option 4.
  

Additional Information

• Cancelled means to call off or annul something. (पूर्वनियोजित कार्यक्रम, निर्णय आदि को रद्द करना, निरस्‍त करना)
• Indifferent means having no particular interest or sympathy; unconcerned. (व्‍यक्ति या वस्‍तु में रुचि या सोच-विचार से रहित; उदासीन)
• Modest means unassuming or moderate in one's opinion or estimate of one's abilities. (विनम्र, विनीत (अपनी क्षमताओं आदि का बखान न करने वाला))

The correct answer is "Alluring."

 Key Points

• "Bewitching" means having a captivating or enchanting effect. (मनोरम या मंत्रमुग्ध करने वाला प्रभाव रखने वाला)
• Example: He was mesmerized by her bewitching green eyes.
• "Alluring" is a synonym for bewitching.
• It means attractive or enticing. (रहस्‍यमय ढंग से लुभावना व मोहक)
• Example: She has an alluring smile.
• The correct answer is Option 2.

Additional Information

• Painful means causing physical or emotional discomfort. (दर्द या पीड़ा उत्‍पन्‍न करने वाला; पीड़ादायी)
• Rude means lacking manners or being impolite. (अशिष्‍ट (किसी के प्रति) (किसी बात पर))
• Repulsive means causing disgust or aversion. (घोर नफ़रत पैदा करने वाला; घृणास्‍पद)

The correct answer is "No correction required."

 Key Points

• The original sentence is grammatically correct and does not require any substitution.
• The verb "had" is in the past perfect tense, which is appropriate for the context of the sentence.
• The sentence effectively communicates the mermaid's sentiment about living far from human civilization.
• The correct answer is Option 2.

The correct answer is "QPSR."

 Key Points

• The sentence talks about the Lotus Temple and its popularity in India.
• The sentence starts with Q, which talks about the popularity of the Lotus Temple.
• The next part is P, which talks about the unparalleled popularity of the Lotus Temple.
• Then comes S, which talks about the longevity of its popularity throughout India.
• The sentence ends with R, which talks about the dominance of the Lotus Temple in literature and art.
• The correct answer is Option 1.

Correct sentence: T**he lotus Temple has always enjoyed an unparalleled popularity throughout the length and breadth of India from the earliest times down to the present day, as shown by its pre-dominance in literature and art.

The correct answer is "Percecution."

 Key Points

• The correct spelling of the word is "persecution."
• The word means the act of harassing or oppressing someone, usually because of their beliefs or race. (अत्‍याचार, उत्‍पीड़न)
• Example: They left the country out of fear of persecution.
• The error in spelling could be due to a typo or a lack of familiarity with the word.
• The correct answer is Option 3.
  

Additional Information

• Option 1 (Persistent) is spelled correctly and means continuing to exist or endure over a long period of time. (लंबे समय तक अस्तित्व में रहना या कायम रहना)
• Option 2 (Rabble) is spelled correctly and means a disorderly crowd of people. (शोरगुल करती या हिंसा पर उतारू भीड़; असंगठित भीड़)
• Option 4 (Deserted) is spelled correctly and means abandoned or left alone. (वीरान, परित्‍यक्त)