SSC CGL 2021 Tier-I (Held On : 13 April 2022 Shift 3) (Previous Year Paper)

In first and second dice 2, 3 are common in both dice.

First dice is rotated 180⁰ vertically and then 90⁰ horizontally in anti-clockwise direction.

∴ Here, the opposite face of side '4' is side '5'.

Hence, the correct answer is "5".

The logic followed here is :-

Hence, the correct answer is "TLXL".

The figure hidden in the given options is as shown below :

Hence, the correct answer is "Option 2".

The logic followed here is :-

Hence, the correct answer is "60".

Five friends, Vishnu, Chirag, Raina, Kavya and Surbhi, are sitting around a circular table, facing the center.

1) Vishnu is to the immediate right of Kavya.

2) Chirag is third to the left of Kavya.

3) Surbhi is not adjacent to Chirag.

∴ Here, 'Raina' is second to the left of 'Kavya'.

Hence, the correct answer is "Raina".

The logic followed here is :-

By using BODMAS RULE :

Option 1) : ÷, -, +, ×, =

Given equation : 34 * 17 * 54 * 18 * 6 * 56

After inserting the symbols in given equation the equation is as follows : 34 ÷ 17 - 54 + 18 × 6 = 56

⇒ 34 ÷ 17 - 54 + 18 × 6 = 56

⇒ 2 - 54 + 18 × 6 = 56

⇒ 2 - 54 + 108 = 56

⇒ 110 - 54 = 56

⇒ 56 = 56

LHS = RHS

Option 2) : ×, +, ÷,  -, =

Given equation : 34 * 17 * 54 * 18 * 6 * 56

After inserting the symbols in given equation the equation is as follows : 34 × 17 + 54 ÷ 18 - 6 = 56

⇒ 34 × 17 + 54 ÷ 18 - 6 = 56

⇒ 34 × 17 + 3 - 6 = 56

⇒ 578 + 3 - 6 = 56

⇒ 581 - 6 = 56

⇒ 575 ≠ 56

LHS ≠ RHS

Option 3) : +, ÷, ×, -, =

Given equation : 34 * 17 * 54 * 18 * 6 * 56

After inserting the symbols in given equation the equation is as follows : 34 + 17 ÷ 54 × 18 - 6 = 56

⇒ 34 + 17 ÷ 54 × 18 - 6 = 56

⇒ 34 + 0.314 × 18 - 6 = 56

⇒ 34 + 5.66 - 6 = 56

⇒ 39.66 - 6 = 56

⇒ 33.66 ≠ 56

LHS ≠ RHS

Option 4) : ÷, -, ×, +, =

Given equation : 34 * 17 * 54 * 18 * 6 * 56

After inserting the symbols in given equation the equation is as follows : 34 ÷ 17 - 54 × 18 + 6 = 56

⇒ 34 ÷ 17 - 54 × 18 + 6 = 56

⇒ 2 - 54 × 18 + 6 = 56

⇒ 2 - 972 + 6 = 56

⇒ 8 - 972 = 56

⇒ - 964 ≠ 56

LHS ≠ RHS

Hence, the correct answer is "÷, -, +, ×, =".

The logic followed here is :-

First number² + First number = Second number 

• 7 : 56 → 7² + 7 = 49 + 7 = 56

Similarly,

• 11 : ? → 11² + 11 = 121 + 11 = 132

Hence, the correct answer is "132".

After unfolding the paper the figure formed is as shown below :

Hence, the correct answer is "Option 3".

The logic followed here is :-

Consonants are added +1 of alphabet positional value.

Vowels are subtracted -1 of alphabet positional value.

'MANIA' is written as 'NZOHZ'.

and

'PROUD' is written as 'QSNTE'.

Similarly,

'DONKEY' will be written as :

Hence, the correct answer is "ENOLDZ".

The logic followed here is :-

By using BODMAS RULE :

Option 1) : 63 ÷ 15 + 21 × 5 - 4 = 74

After interchanging the number 15 and 21 in given equation the equation is as follows : 63 ÷ 21 + 15 × 5 - 4 = 74

⇒ 63 ÷ 21 + 15 × 5 - 4 = 74

⇒ 3 + 15 × 5 - 4 = 74

⇒ 3 + 75 - 4 = 74

⇒ 78 - 4 = 74

⇒ 74 = 74

LHS = RHS

Option 2) : 62 ÷ 31 - 21 + 15 × 3 = 80

After interchanging the number 15 and 21 in given equation the equation is as follows : 62 ÷ 31 - 15 + 21 × 3 = 80

⇒ 62 ÷ 31 - 15 + 21 × 3 = 80

⇒ 2 - 15 + 21 × 3 = 80

⇒ 2 - 15 + 63 = 80

⇒ 65 - 15 = 80

⇒ 50 ≠ 80

LHS ≠ RHS

Option 3) : 24 - 21 ÷ 3 + 15 - 7 = 23

After interchanging the number 15 and 21 in given equation the equation is as follows : 24 - 15 ÷ 3 + 21 - 7 = 23

⇒ 24 - 15 ÷ 3 + 21 - 7 = 23

⇒ 24 - 5 + 21 - 7 = 23

⇒ 45 - 5 - 7 = 23

⇒ 45 - 12 = 23

⇒ 33 ≠ 23

LHS ≠ RHS

Option 4) : 26 + 21 × 15 ÷ 3 - 14 = 108

After interchanging the number 15 and 21 in given equation the equation is as follows : 26 + 15 × 21 ÷ 3 - 14 = 108

⇒ 26 + 15 × 21 ÷ 3 - 14 = 108

⇒ 26 + 15 × 7 - 14 = 108

⇒ 26 + 105 - 14 = 108

⇒ 131 - 14 = 108

⇒ 117 ≠ 108

Hence, the correct answer is "63 ÷ 15 + 21 × 5 - 4 = 74".

Preparing the family tree using the following symbol:

Family Tree :-

∴ Here, Arpita is mother of Pritam's son.

Hence, the correct answer is "Mother".

The logic followed here is :-

1) SYGM

= 19 + 25 + 7 + 13

= 64 → Even

2) DBJH

<br>

 

= 4 + 2 + 10 + 8

= 24 → Even

3) LRPV

= 12 + 18 + 16 + 22

= 68 → Even 

4) CNDV

= 3 + 14 + 4 + 22

= 43 → Prime and Odd.

∴ Here, 'CNDV' is different from other three alternatives.

Hence, the correct answer is "CNDV".

The water image of the given figure is as shown below :

Detailed Explanation:

• The line PQ is water image.
• The numbers "8965423" has first number '8'. So, the water image should be "

" ⇒ Option 2 is eliminated.

• The numbers "8965423" has second number '9'. So, the water image should be "

" ⇒ Option 3 is eliminated.

• The numbers "8965423" has third number '6'. So, the water image should be "

" ⇒ Option 4 is eliminated.

Hence, the correct answer is "Option 1".

The arrangement of the given words in a logical and meaningful order is as shown below :

The process of sketching art on paper and showing to all.

2. Sketching
3. Colouring
4. Framing
5. Displaying

Hence, the correct answer is "2, 3, 4, 1".

The logic followed here is :-

(First number × Second number) - 3 = Third number

Row 1) :

= (5 × 16) - 3

= 80 - 3

= 77

Row 2) :

= (8 × 19) - 3 

= 152 - 3

= 149

Row 3) :

= (13 × 12) - 3

= 156 - 3 

= 153

Hence, the correct answer is "153".

The least possible Venn diagram for the given statements is as shown below :

Conclusions:

I. Some engineers are police officers → False (As All engineers are doctors and No police officer is a doctor so, Some engineers are police officers is false)

II. No engineer is a police officer → True (As All engineers are doctors and No police officer is a doctor so, No engineer is a police officer is true)

III. Some doctors are engineers → True (As All engineers are doctors so, Some doctors are engineers is true)

∴ Here, Conclusions II and III are true.

Hence, the correct answer is "Only conclusions II and III follow".

The logic followed here is :-

∴ Here, 'lost drinks' is coded as 'gan lop'.

Hence, the correct answer is "gan lop".

Mistake Points The question has been asked in reverse sequence.

So, we have to find the option figures when rotated 180° clockwise, and then 45° anticlockwise will result in the given question figure.

(Note: Find the option figure which is the same as the question figure after rotating 180° clockwise, and then 45° anticlockwise)

 

The pattern followed here is:-

By choosing the options and the options figure is rotated 180° clockwise and then 45° anticlockwise.

By choosing the second way the figure of Option (3) the steps are as follows :

1. The figure when rotated 180° clockwise is :

2. Then the figure is rotated in 45° anticlockwise is :

Thus the final obtained figure is the given question figure.

Hence, the correct answer is "Option 3".

The image that replace ? in the given series is as shown below :

• The line in middle divides the box in two equal halves in all boxes.
• The rectangular box rotated 180⁰ and moved one step from figure to figure.
• Circle is moved one step in anti-clockwise from figure to figure.
• Arrow is rotated 90⁰ clockwise and moved one step in clockwise from figure to figure.

Hence, the correct answer is "Option 2".

The least possible Venn diagram for the given relation is as shown below :

• All teachers are human.
• All clerks are human.
• All peon are human.

Hence, the correct answer "Option 4".

The matches played before the start of the women's national series = x

The average score (runs/match) of Mithali before the start of the women's national series was 45 → 45x ........ (i)

In the women's national series of 10 matches, her total score was 500 runs → 500 ........ (ii)

The total number of matches played by her till date = x + 10

The total number of matches played by her till date, if her new average after the series is 47.5 → (x + 10) × 47.5 ......... (iii)

From equations (i), (ii) and (iii) we get,

⇒ 45x + 500 = (x + 10) × 47.5

⇒ 45x + 500 = 47.5x + 475

⇒ 2.5x = 25

⇒ x = 10

∴ The matches played before the start of the women's national series (x) = 10 matches.

∴ Here, The total number of matches played by her till date = x + 10

The total number of matches played by her till date = 10 + 10

The total number of matches played by her till date = 20

Hence, the correct answer is "20".

The logic followed here is :-

LOOK is coded as 2330.

and

BALL is coded as 1413.

Similarly,

HELP will be coded as :

Hence, the correct answer is "2417".

The logic followed here is :-

Hence, the correct answer is "120".

Given :- Q _ T _ S _ K _ R _ _ K _ R S

By checking options and substituting accordingly.

1) K R Q T S K T → Q K T R S - Q K T R S - K K T R S

2) K R Q T S Q T → Q K T R S - Q K T R S - Q K T R S

• Here pattern "QKTRS" is repeated.

3) K R Q T S Q R → Q K T R S - Q K T R S - Q K R R S

4) K R T R S Q T → Q K T R S - T K R R S - Q K T R S

• Option (2) gives the pattern of :- Q K T R S - Q K T R S - Q K T R S

Hence, the correct answer is "K R Q T S Q T".

The logic followed here is :-

KCH : GXS

Similarly,

TJD : ?

Hence, the correct answer is "PQW".

The correct answer is 1982.

Key Points

• Ramsar convention to promote conservation and wise use of all wetlands through regional actions and international cooperation came to force in India in 1982.
• India is a party to the Ramsar Convention. India signed under it on 1st February 1982.
• The term was coined when the International Treaty for the Conservation and Sustainable Use of Wetlands was signed in a city in Iran called Ramsar in 1971.

Additional Information

• Ramsar Convention is known as the Convention of Wetlands.
• It was established in 1971 by UNESCO and came into force in 1975.
• There are 80 Ramsar Sites in India (on Feb 2, 2024). The latest Ramsar sites are - Ankasamudra Bird Conservation Reserve, Aghanashini Estuary and Magadi Kere Conservation Reserve are located in Karnataka whereas two, Karaivetti Bird Sanctuary and Longwood Shola Reserve Forest are in Tamil Nadu.
• Sundarbans is the largest Ramsar Site in India.
• Chilika Lake (Orissa) and Keoladeo National Park (Rajasthan) were recognized as the first Ramsar Sites of India.
• Tamil Nadu has the most number of Ramsar Sites in India. It has 14 Indian Wetlands.
• Renuka Wetland (Area – 20 ha) in Himachal Pradesh is the smallest wetland of India.

The correct answer is Karnataka.

Key Points

• Tibetan Buddhist Golden Temple is located in Coorg, Karnataka.
• The Namdroling Monastery popularly referred to as ‘The Golden Temple is one of the largest Tibetan settlements in India.
• Thegchog Namdrol Shedrub Daryeling is the full name of the Namdroling Monastery.
• It is spread over an area of 80 square feet and was built from Bamboo which was donated by the Indian Government to the Tibetans in exile.
• The foundation for this majestic monastery was laid down in 1963 by His Holiness Pema Norbu Rinpoche, the 11th throne-holder of the Palyul Lineage of the Nyingma School of Tibetan Buddhism.

Additional Information

The correct answer is equestrian.

Key Points

• Fouaad Mirza is an Indian equestrian.
• He is from Bangalore.
• An equestrian is someone who is involved with horses.
• Fouaad Mirza is an Indian equestrian who won silver medals in both individual eventing and team eventing at the 2018 Asian Games.
• Fouaad Mirza was India's third-ever entry in equestrian at the Tokyo Olympics 2020, after Indrajit Lamba's appearance in 1996 and Imtiaz Anees in 2000.

Additional Information

The correct answer is Lentil.

Key Points

• For Rabi marketing season 2021-22, the Cabinet Committee on Economic Affairs (CCEA) announced the highest increase in Minimum Support Price (MSP) for lentils.
• The government has increased the MSP of Rabi crops for RMS 2022-23, to ensure remunerative prices to the growers for their produce.
• The highest absolute increase in MSP over the previous year has been recommended for Lentil (Masur) and Rapeseeds & Mustard (Rs.400 per quintal each) followed by gram (Rs.130 per quintal).
• The increase in MSP for Rabi Crops for RMS 2022-23 is in line with the Union Budget 2018-19 announcement of fixing the MSPs at a level of at least 1.5 times of the all-India weighted average cost of production, aiming for reasonably fair remuneration for the fanners.

Additional Information

The correct answer is 1955.

Key Points

• The Citizenship Act was passed for the first time in India in the year 1955.
• The Citizenship Act, 1955 provides for the acquisition and determination of Indian citizenship,
• There are five ways in which Indian citizenship can be acquired:
• birth,
• descent,
• registration, and
• naturalization.
• Acquisition or Incorporation of Territory

Additional Information

• ​The provisions listed under the Citizenship Act, 1955 are:
• ​Every person born in India on or after 26.01.1950 but before 01.07.1987 is an Indian citizen irrespective of the nationality of his/her parents.
• Every person born in India between 01.07.1987 and 02.12.2004 is a citizen of India given either of his/her parents is a citizen of the country at the time of his/her birth.
• A person of Indian origin who has been a resident of India for 7 years before applying for registration.
• A person of Indian origin who is a resident of any country outside undivided India.
• A person who is married to an Indian citizen and is ordinarily resident for 7 years before applying for registration.
• A person born outside India on or after January 26, 1950, is a citizen of India by descent if his/her father was a citizen of India by birth.
• A person born outside India on or after December 10, 1992, but before December 3, 2004, if either of his/her parents was a citizen of India by birth.
• A person can acquire citizenship by naturalization if he/she is ordinarily resident of India for 12 years (throughout 12 months preceding the date of application and 11 years in the aggregate) and fulfils all qualifications in the third schedule of the Citizenship Act.

The correct answer is Mizoram.

Key Points

• As per the Census of 2011, the state of Mizoram has a literacy rate of more than 91.3%.
• Mizoram has a male literacy rate of 93.35% and the female literacy rate of 89.27%.
• According to the census of 2011, Kerala has the highest literacy rate of 94% in India.
• The census confirms that the highest literacy rate among the Union territory is Lakshadweep (91.85%).

Additional Information

• For the purpose of census 2011, a person aged seven and above, who can both read and write with understanding in any language, is treated as literate.
• The 2011 census, indicated a 2001–2011 literacy growth of 9.2%.
• According to the Census 2011, the literacy rate in the country is 74.04 per cent, 82.14 for males and 65.46 for females.
• Bihar with a literacy rate of 63.82 per cent ranks last in the country preceded by Arunachal Pradesh (66.95 per cent) and Rajasthan (67.06 per cent).

The correct answer is Madhuri Vijay.

Key Points

• Crossword Book Award 2020 award for a debut novel was won by Madhuri Vijay.
• The award was given for her book on Kashmir named 'The Far Field'.
• The Far Field by Madhuri Vijay has also won the INR 25 lakh JCB Prize for Literature.
• Crossword Book Award was established in the year 1998.
• The aim of the award is to create a prize equivalent to Western literary accolades such as the Booker Prize and the Pulitzer Prize.
• The Raymond Group, a textiles company, sponsored it from 2014.

Additional Information

The correct answer is SWAJAL.

Key Points

• The SWAJAL Scheme, which is an initiative of the Ministry of Drinking Water and Sanitation, seeks to provide water to 115 Indian districts to help them in meeting their basic needs such as drinking, cooking, and other domestic essentials.
• The scheme aims in providing steady water supplied by solar power for consumption such as drinking, cooking, and other household fundamental desires to all the rural individuals throughout the year
• The government launched the scheme in March of 2018 with the guidance of the National Rural Drinking Water Programme.
• The commission was assigned about Rs.700 crores, especially for the scheme.

Additional Information

• Components of Swajal Yojana: 
• Groundwater scheme:
• The scheme aims to form a bore-well, canal well, or a mighty prevailing layout of a mandatory result with an appropriate container.
• The scheme serves as a detector to govern the pump undertaking.
• The tubes of assigned extents and size, integrity for water release (lifting main) to the tank, and diffusion system.
• Surface water schemes:
• ​The scheme aims in designing a bearable surface water quotation in the conference with the population.
• Sustainability of citation shall get authorized by the water resources department of the state commission.

The correct answer is Stratosphere.

Key Points

• An ozone hole refers to a region in the stratosphere where the concentration of ozone becomes extremely low in certain months.
• Ozone (chemically, a molecule of three oxygen atoms) is found mainly in the upper atmosphere, an area called the stratosphere, between 10 and 50 km from the earth's surface.
• The cause of the formation of the hole is attributed to the unusual weather at the poles.
• It is responsible for protecting life on Earth from the harmful UV radiation from the Sun.
• The lack of the Ozone layer can have severe implications for people living directly under it. The most prominent effects are Skin Cancer and other possibly fatal skin diseases.

Additional Information

The correct answer is 1978.

Key Points

• The Immunization Programme introduced in India as the 'Expanded Programme of Immunization' (EPI) by the Ministry of Health and Family Welfare was introduced in India in the year 1978.
• It was renamed as Universal Immunization Programme in 1985 when its reach was expanded beyond urban areas.
• The objective of the programme was:
• To reduce morbidity and mortality from diphtheria, pertussis, tetanus, poliomyelitis and childhood tuberculosis by providing immunization services to all eligible children and pregnant women by 1990.

Additional Information

• Universal Immunization Programme (UIP) is one of the largest public health programmes targeting close to 2.67 crore newborns and 2.9 crore pregnant women annually.
• It is one of the most cost-effective public health interventions and is largely responsible for the reduction of vaccine-preventable under-5 mortality rate.
• Under UIP, immunization is provided free of cost against 12 vaccine-preventable diseases.
• Nationally against 9 diseases - Diphtheria, Pertussis, Tetanus, Polio, Measles, Rubella, a severe form of Childhood Tuberculosis, Hepatitis B and Meningitis & Pneumonia caused by Hemophilus Influenza type B.

The correct answer is Bank of Baroda.

Key Points

• Dena Bank and Vijaya Bank have been merged with Bank of Baroda with effect from April 1, 2019.
• According to the Scheme of Amalgamation, shareholders of Vijaya Bank will get 402 equity shares of BoB for every 1,000 shares held.
• In the case of Dena Bank, its shareholders will get 110 shares of BoB for every 1,000 shares.
• With a combined business of Rs 14.82 lakh crore, BOB became the third-largest bank after State Bank of India (SBI) and ICICI Bank.

Additional Information

The correct answer is Mumbai Indians and Royal Challengers Bangalore.

Key Points

• The two teams which played against each other in the first match of IPL 2021 were Mumbai Indians and Royal Challengers Bangalore.
• The MS Dhoni-led Chennai Super Kings (CSK) lifted their 4th IPL title after defeating the Eoin Morgan-led Kolkata Knight Riders (KKR) by 27 runs in IPL 2021.
• The first half of IPL was played in India, while the second half was played in UAE. The finals were held at Dubai International Stadium.
• Eoin Morgan is the captain of the Runner up team i.e Kolkata Knight Riders (KKR). He is from England.

Additional Information

The correct answer is Singapore.

Key Points

• On 21 October 1943, Subhash Chandra Bose proclaimed the formation of the Provisional Government of Free India in Singapore.
• It was also called Azad Hind or Free India.
• It was established with financial, political and military support from Imperial Japan.
• The Indian National Army (INA) was the army of the Azad Hind government.
• Azad Hind had diplomatic ties with Nazi Germany, the Italian Socialist Republic, the Empire of Japan, Thailand, Burma, Croatia, Manchukuo and the Second Philippine Republic.

Additional Information

• Subhas Chandra Bose was born on 23rd January 1897, in Cuttack, Orissa Division, Bengal Province, to Prabhavati Dutt Bose and Janakinath Bose.
• His Jayanti is celebrated as 'Parakram Diwas' on 23rd January.
• At Rangoon and Singapore, Subhash Chandra Bose established two Indian National Army Headquarters.
• The Rani Jhansi regiment was created as a women's unit. Lakshmi Sehgal was in charge of the regiment.

The correct answer is Arunachal Pradesh.

Key Points

• Gorichen Peak is located in Arunachal Pradesh.
• Gorichen is the highest scalable peak in Arunachal Pradesh, towering at a height of over 21,300 ft above sea level.
• The mountain is situated in the Tawang District.
• Gorichen is a glacier-fed mountain group in the Eastern Himalayas.

Additional Information

The correct answer is 42^nd.

Key Points

• 42^nd Amendment of the Constitution of India changed the description of India from a 'sovereign democratic republic' to a 'sovereign, socialist secular democratic republic'.
• It also changed the words 'unity of the nation' to 'unity and integrity of the nation'.
• The Act is also called The Constitution Act, 1976.
• The Act is also known as Mini Constitution.

Additional Information

• Some other provisions of the 42nd Amendment:
• It transferred five subjects from the state list to the concurrent list:
• Education,
• Forests,
• Weights & Measures,
• Protection of Wild Animals, and Birds
• Administration of Justice.
• 10 Fundamental Duties added for the citizens under Article 51A.
• Curtailed the judicial review power of the High Courts.
• Part XIV-A added entitled ‘Tribunals dealing with Administrative matters’ and ‘Tribunals for other matters.
• Three new DPSPs (Directive Principles of State Policy) were added to the existing list of DPSPs and one was amended.

The correct answer is GDP at Constant Prices - Taxes + Subsidies.

Key Points

• According to the Output Method, GDP is calculated as GDP at Constant Prices - Taxes + Subsidies.
• The GDP Output Method measures the monetary or market value of all the goods and services produced within the borders of the country.
• GDP at Market Price includes indirect taxes and excludes subsidies. Therefore, to derive the value at factor cost, we must subtract indirect taxes and add subsidies.
• In order to avoid a distorted measure of GDP due to price level changes, GDP at constant prices or Real GDP is computed.

Additional Information

• GDP is the final value of the final goods and services produced within the geographic boundaries of a country during a specified period of time, normally a year.
• It counts the goods and services produced within the country and hence does not consider the products that the country imports from another country.
• GDP calculation through income approach:
• The GDP income approach formula starts with the income earned from the production of goods and services.
• GDP=Total National Income +Sales Taxes+Depreciation +Net Foreign Factor Income.
• GDP calculation through Expenditure method:
• ​This measures the total expenditure incurred by all entities on goods and services within the domestic boundaries of a country.
• GDP= Consumption expenditure + Investment expenditure + Government expenditure + (Exports - Imports).

The correct answer is The Palas.

Key Points

• Nalanda and Vikramashila universities were founded during the reign of the Pala dynasty.
• Vikramashila was founded by the Pala emperor Dharmapala (783 to 820 AD) in response to a supposed decline in the quality of scholarship at Nalanda.
• Kumargupta founded Nalanda University in the 5th century A.D.
• Nalanda and Vikramshila were the two most important centres of learning in India during the Pala Empire.
• In 1193 army led by the Turkish leader Bakhtiyar Khilji who was the general of Qutubuddin Aibak destroyed them
• During the time of Palas, the Bengali language developed. The first Bengali literary work Charyapada is attributed to this period.

Additional Information

The correct answer is Cyanide ion - CN^-

Key Points

• Cyanide ions are chemical compounds that are fast-acting poisons with a chemical formula CN^-.
• Cyanides consist of one nitrogen atom and a carbon atom connected to each other with a triple bond.

 

Additional Information

• Cyanide ion (CN–) is well known for its extreme toxicity to human health.
• Cyanides are widely used in a variety of industries, including mining, electroplating, metal cleaning, pharmaceuticals, plastics, etc.
• The cyanide-contaminated industrial waste may pollute water resources, thereby posing a great threat to human health.
• Strategies to detect cyanide include mass spectrometry, electrochemistry, ion chromatography, etc.

The correct answer is Sarod.

Key Points

• Sarod is not a percussion instrument whereas Mridangam, Tabla, and Ghatam are percussion instruments.
• In percussion, the sound is produced by striking the animal skin which has been stretched across an earthen or metal pot or a wooden barrel or frame.
• The main categories are-
• Oordhwaka,
• Ankya,
• Alingya, and
• the waisted or the Damaru family of drums

Additional Information

• Tabla pair is a set of two vertical Oordhwaka drums.
• Ankya drums are held horizontally before the musician and usually, both sides are covered with animal hide.
• Oordhwaka drums are placed vertically before the musician and sound is produced by striking them with sticks or fingers.
• Alingya drums have the animal hide fixed to a wooden round frame and are embraced or held close to the body with one hand while the other hand is used for playing the instrument.
• Damru family is also known as the hourglass variety of drums as their shape resembles an hourglass.

The correct answer is Dhaka.

Key Points

• South Asian leaders signed the SAARC Charter at the first summit in Dhaka in the year 1985.
• The South Asian Association for Regional Cooperation (SAARC) was established with the signing of the SAARC Charter in Dhaka on 8 December 1985.
• The Headquarters and Secretariat of the Association are in Kathmandu, Nepal.

Additional Information

• SAARC comprises 3% of the world's area, 21% of the world's population and 3.8% (US$2.9 trillion) of the global economy.
• SAARC Development Fund's primary objective is the funding of project-based collaboration in social sectors such as poverty alleviation, development, etc.
• It is the world’s most densely populated region and one of the most fertile areas.
• SAARC comprises of eight-member States:
• Afghanistan
• Bangladesh
• Bhutan
• India
• Maldives
• Nepal
• Pakistan
• Sri Lanka

The correct answer is 25g.

Key Points

• A typical adult human body contains about 25 magnesium.
• Magnesium is needed for more than 300 biochemical reactions in the body.
• It helps to maintain normal nerve and muscle function, supports a healthy immune system, keeps the heartbeat steady, and helps bones remain strong.
• It also helps adjust blood glucose levels. It aids in the production of energy and protein.
• Magnesium acts as a natural calcium blocker, helping your muscle cells relax after contracting.

Additional Information

• Minerals in food are the elements present in food that are required by our body to develop and function properly.
• Minerals are the inorganic nutrients that also play a key role in ensuring health and well.
• They include the trace elements copper, iodine, iron, manganese, selenium, and zinc together with the macro elements calcium, magnesium, potassium, and sodium.

The correct answer is Dutee Chand.

Key Points

• Dutee Chand was selected for the inaugural Chhattisgarh Veerni Award in April 2021.
• The award, which recognizes the contribution of Indian women in different fields, including sports, was given virtually on April 14, 2021.
• She became the first Indian woman to win a gold medal at the World University Games held in Italy in 2019.
• She is a silver-medalist in 100 and 200 meters at the 2018 Jakarta Asian Games.
• Dutee holds the national record of 11.22 secs in 100m.

Additional Information

The correct answer is clay.

Key Points

• The Mesopotamians wrote on tablets made of clay.
• Mesopotamian civilization is the most ancient civilization recorded in human history until now.
• The name Mesopotamia is derived from the Greek word mesos, meaning middle and potamos, meaning river.
• Mesopotamia is a place situated in the middle of the Euphrates and the Tigris rivers which is now a part of Iraq.

Additional Information

• It was in Mesopotamia that the earliest cities, the first urban civilization, appeared, about 3500 BCE.
• Some of the major Mesopotamian civilizations include the Sumerian, Assyrian, Akkadian, and Babylonian civilizations.
• In Mesopotamian civilization, the houses were built around distinct palaces and temples & dedicated to the patron Gods or Goddesses.
• Mesopotamia and Indus Valley Civilization can be called as contemporary civilizations as there were pieces of evidence of the trade between these civilizations which were found in excavations of Mohenjedaro.
• Mesopatamians society clearly ruled by a king whereas the Indus society was not ruled by a King maybe by a village head or others.
• The first city-states gradually develop in southern Mesopotamia in 5000-3500 BCE. This is the achievement of the Sumerian people.

The correct answer is Devdutt Pattanaik.

Key Points

• The author of the book 'Myth = Mithya: Decoding Hindu Mythology' is Devdutt Pattanaik.
• Myth = Mithya: A Handbook Of Hindu Mythology is a guide to unravelling and understanding the many myths and legends and the symbolism of the Hindu religion.
• The book explains concepts like the Pitr, Jiva, the Devas and the Asuras.

Additional Information

The correct answer is Nanda Devi.

Key Points

• Nanda Devi mountains are located near the river Dhauliganga.
• It is located in Chamoli Garhwal district of Uttarakhand, between the Rishiganga valley on the west and the Goriganga valley on the east.
• The peak, whose name means "Bliss-Giving Goddess", is regarded as the patron goddess of the Garhwal and Kumaon Himalayas.
• It is India's second-highest mountain which is approached through the Rishi Ganga gorge, one of the deepest in the world.
• The peak of the Nanda Devi is located at a height of 7816m.

Additional Information

Given:

sin2θ - cos2θ - 3sinθ + 2 = 0, 0° < θ < 90°

Formula used:

cos2θ = 1 - sin2θ

Calculation:

sin2θ - cos2θ - 3sinθ + 2 = 0

⇒ sin2θ - (1 - sin2θ) - 3sinθ + 2 = 0

⇒ sin2θ - 1 + sin2θ - 3sinθ + 2 = 0

⇒ 2sin2θ - 3sinθ + 1 = 0

⇒ 2sin2θ - 2sinθ - sinθ + 1 = 0

⇒ 2sinθ (sinθ - 1) - 1 (sinθ - 1) = 0

⇒ (2sinθ - 1) (sinθ - 1) = 0

⇒ sinθ - 1 = 0 ⇒ sinθ = 1 ⇒ θ = 90° [Not possible because 0° < θ < 90°]

⇒ 2sinθ - 1 = 0 ⇒ sinθ = 1/2 ⇒ θ = 30°

Then, 1 + secθ + tanθ = 1 + sec30° + tan30°

= 1 + (2/√3) + (1/√3)

= (√3 + 3)/√3

= 1 + √3

∴ The value of 1 + secθ + tanθ is 1 + √3

Given:

The price of one vanilla cake = ₹9

The price of one chocolate cake = ₹10

Total number of cakes sold in the week = 10500

Calculation:

The total number of cakes sold on Friday = (10/100) × 10500 = 1050

The ratio of vanilla cakes sold to chocolate cakes sold on Friday = 4 ∶ 3

The number of vanilla cake sold = (4/7) × 1050 = 600

The number of chocolate cake sold = 1050 - 600 = 450

The total sale = (600 × 9) + (450 × 10) = 5400 + 4500 = 9900

∴ The total amount earned (in ₹) by selling all vanilla cakes and chocolate cakes on Friday is ₹9900

Given:

The given number = 9m2365n48

Concept used:

Divisibility rule of 8: If the last three digits of a number are divisible by 8, the number will be divisible by 8

Divisibility rule of 11: The provided integer is divisible if the difference between the sum of the digits at odd places and the sum of the digits at even places is 0 or divisible by 11.

Calculation:

9m2365n48 is divisible by 88

So, 9m2365n48 is divisible by 8 and 11

⇒ n48 should be divisible by 8

Put n = 2, 248 is divisible by 8

Hence, n = 2

Now, 9m2365248 should be divisible by 11

⇒ (9 + 2 + 6 + 2 + 8) - (m + 3 + 5 + 4) should be divisible by 11

⇒ 27 - (m + 12) should be divisible by 11

⇒ 15 - m should be divisible by 11

Put m = 4 then, 15 - 4 = 11 which is divisible by 11

So, m = 4

Then, (m2 × n2) = (42 × 22) = 16 × 4 = 64

∴ The value of (m2 × n2) is 64

Given:

The given expression = (sec θ - tan θ)² (1 + sin θ)² ÷ cos² θ

Formula used:

1 - sin2 θ = cos2 θ

(a + b) (a - b) = a² - b²

Calculation:

(sec θ - tan θ)2 (1 + sin θ)2 ÷ cos2 θ

= [(1/cos θ) - (sin θ/cos θ)]2 (1 + sin θ)2 ÷ cos2 θ

= $\frac{\frac{(1-sin,θ)^2}{cos^2 ,θ}(1+sin,θ)^2}{cos^2,θ}$

= (1 - sin θ)2 (1 + sin θ)2/cos⁴ θ

= [(1 - sin θ) (1 + sin θ)]2/cos4 θ

= (1 - sin² θ)²/cos4 θ

= (cos2 θ)2/cos4 θ

= cos4 θ/cos4 θ

= 1

∴ The value of the given expression is 1

Given:

The average of 46 numbers = 50.5

The average of the first 25 numbers = 45

The average of the last 18 numbers = 56

The 28th number = 67

Formula used:

Average = Sum of the terms/Number of terms

Calculation:

If the 26th and 27th numbers are excluded, then total number = 46 - 2 = 44

The average = [(25 × 45) + (18 × 56) + 67]/44

= (1125 + 1008 + 67)/44

= 2200/44

= 50

∴ The average of the remaining numbers is 50

Given:

The height of the tree = 45 m

The length of the shadow of the tree = 15√3 m

Calculation:

The height of the tree (BC) = 45 m

The length of the shadow of the tree (AB) = 15√3 m

The angle of elevation = ∠CAB

tan ∠CAB = BC/AB

⇒ tan ∠CAB = 45/15√3

⇒ tan ∠CAB = √3 = tan 60°

⇒ ∠CAB = 60°

∴ The angle (in degrees) of elevation of the sun is 60°

 

⇒ Height increased by = [(8/7) - 1] × 100 = (1/7) × 100

⇒ Height increased by = (1/7) × 100 = 14.29%

∴ The height of the triangle should be increased by 14.29%

Given:

The base of a triangle is increased by 40%

The area of a triangle is increased by 60%

Formula used:

Area of a triangle = (1/2) × Base × Height

Calculation:

Let, the base of old triangle = b; the base of new triangle = b × (140/100) = 7b/5

The height of the old triangle = h; the height of the new triangle = h₁

So, $\frac{\frac{1}{2}×\frac{7b}{5}× h_1}{\frac{1}{2}× b× h}=\frac{160}{100}$

⇒ (7/5)h₁/h = 8/5

⇒ 7h₁ = 8h

⇒ h₁/h = 8/7

The height increases = [(8 - 7)/7] × 100

= (1/7) × 100

= 14.285...%

≈ 14.29% (correct to two decimal places)

∴ The height of the triangle should be increased by 14.29%

Given:

There is a histogram that shows the marks obtained by students in an examination

Calculation:

The number of students who obtained less than 200 marks = 30

The number of students who obtained 400 or more marks = 35

The percentage = [(35 - 30)/35] × 100

= (5/35) × 100

= 14.285...%

≈ 14.3% (correct to one decimal place)

∴ The number of students who obtained less than 200 marks is 14.3% less than the number of students who obtained 400 or more marks

Given:

A can do one-fifth of the work in 3 days

B's efficiency is half of that of A

Concept used:

Time = Work/Efficiency

Calculation:

A can do in one day = 3 × 5 = 15 work

B can do in one day = 15 × 2 = 30 work

∴ Total work = 30 (LCM of 15 and 30)

So, A's efficiency = 30/15 = 2

B's efficiency = 30/30 = 1

Then, time is taken by A and B to do half work = (30/2)/(2 + 1) = 15/3 = 5 days

∴ A and B working together can do half of the work in 5 days

Given:

Total distance = 5x + x + 4x = 10x

Formula:

Distance/Speed = Time

Calculation:

(5x/5) + (x/5) + (4x/6) = 112/60 [∵ 112 minutes = 112/60 hours]

⇒ 56x/30 = 112/60

⇒ 56x/30 = 56/30

⇒ x = 1

The total distance = 10 × 1 = 10 km

∴ The total distance (in km) travelled by the person is 10 km

Given:

25 (3 + 4p) ÷ 12 of 5 - 3 × 8 = 6

Calculation:

25 (3 + 4p) ÷ 12 of 5 - 3 × 8 = 6

⇒ 25 (3 + 4p) ÷ 60 - 3 × 8 = 6

⇒ $\frac{25(3+4p)}{60}-3\times8=6$

​⇒ $\frac{5(3+4p)}{12}-24=6$

⇒ (15 + 20p - 288)/12 = 6

⇒ 15 + 20p - 288 = 72

⇒ 20p = 72 + 288 - 15 = 345

⇒ p = 345/20 = 69/4 = $17\frac{1}{4}$

∴ The value of p is $17\frac{1}{4}$

Shortcut Trick

Given, ∠QUR = 69°

If the bisectors of ∠SQR and ∠TRQ meet at point U

∠QUR = 90° - ∠P/2

⇒ ∠QUR = (180° - ∠P)/2

⇒ 69° = (180° - ∠P)/2

⇒ 180° - ∠P = 2 × 69° = 138°

⇒ ∠P = 180° - 138° = 42°

∴ The measure of ∠P is 42°

Alternate Method

Given:

∠QUR = 69°

Concept used:

The sum of all angles on a straight line is 180°

The sum of all angles of a triangle is 180°

Calculation:

∠PQR + ∠RQS = 180°

⇒ ∠RQS = 180° - ∠PQR

⇒ ∠RQS/2 = (180° - ∠PQR)/2

⇒ ∠RQS/2 = 90° - ∠PQR/2

⇒ ∠RQU = 90° - ∠PQR/2  [∵ QU is the bisector of ∠RQS]

Similarly, ∠QRU = 90° - ∠PRQ/2

In ΔQUR, ∠RQU + ∠QRU + ∠QUR = 180°

⇒ [90° - ∠PQR/2] + [90° - ∠PRQ/2] + 69° = 180°

⇒ 180° - [∠PQR/2 + ∠PRQ/2] + 69° = 180°

⇒ 180° - [(∠PQR + ∠PRQ)/2] + 69° = 180°

⇒ 180° - [(180° - ∠P)/2] + 69° = 180°

⇒ [(180° - ∠P)/2] = 69°

⇒ 180° - ∠P = 2 × 69° = 138°

⇒ ∠P = 180° - 138° = 42°

∴ The measure of ∠P is 42°

Given:

x + y + z = 2, xyz = - 12 and xy + yz + zx = - 11

Formula used:

x3 + y3 + z3 - 3xyz = (x + y + z) [(x + y + z)2 - 3 (xy + yz + zx)]

Calculation:

x3 + y3 + z3 - 3xyz = (x + y + z) [(x + y + z)2 - 3 (xy + yz + zx)]

⇒ x3 + y3 + z3 - [3 × (- 12)] = 2 [22 - {3 × (- 11)}]

⇒ x3 + y3 + z3 + 36 = 2 (4 + 33)

⇒ x3 + y3 + z3 + 36 = 2 × 37

⇒ x3 + y3 + z3 = 74 - 36 = 38

∴ The value of x3 + y3 + z3 is 38

Given:

Discount = 28%

Profit = 30%

Profit = ₹ 30.90

Formula used:

S.P. = [(100 - Discount%)/100] × M.P.

C.P. = S.P. × [100/(100 + Profit%)]

C.P. = Cost price; M.P. = Marked price; and S.P. = Selling price

Calculation:

Let, M.P. = x

S.P. = [(100 - 28)/100] × x = 36x/50

So, C.P. = (36x/50) × [100/(100 + 30)] = (36x/50) × (100/130) = 36x/65

Then, (36x/50) - (36x/65) = 30.90

⇒ 540x/(50 × 65) = 30.90

⇒ x = (30.90 × 50 × 65)/540 = 185.972... ≈ ₹186 (to the nearest ₹)

∴ The marked price (to the nearest ₹) of the article is ₹186

Given:

The curved surface area of a right circular cylinder = 616 cm2

The area of the base of the right circular cylinder = 38.5 cm2

Formula used:

The area of the base of a right circular cylinder = π × (radius)²

The curved surface area of a right circular cylinder = 2 × π × (radius) × (height)

The volume of a right circular cylinder = π × (radius)2 × (height)

Calculation:

Let, radius = R

So, π × R² = 38.5

⇒ 22/7 × R2 = 77/2

⇒ R2 = (77/2) × (7/22) = 49/4   .....(1)

⇒ R = 7/2 cm

Also, 2 × (22/7) × (7/2) × (Height) = 616

∴ Height = 616 × (1/2) × (7/22) × (2/7) = 28 cm

Then, the volume = (22/7) × (49/4) × (28) = 1078 cm3

∴ The volume (in cm3) of the cylinder is 1078 cm3

Given:

MN = MP = 16√5 cm

NP = 32 cm

Formula used:

Area of a triangle = (1/2) × Base × Height

Circumradius = ABC/4Δ

Where. A, B, and C are three sides of the triangle

Δ = Area of the triangle

Calculation:

MD is perpendicular to NP

So, ND = DP = 32/2 = 16 cm

MD = √[(16√5)² - (16)²] = √(1280 - 256) = √1024 = 32 cm

Area of ΔMNP = (1/2) × 32 × 32 = 512 cm²

Circumradius = (16√5 × 16√5 × 32)/(4 × 512) = 20 cm

∴ The radius (in cm) of the circle is 20 cm

Given:

ΔABC ~ ΔPQR

ar(ΔABC)/ar(ΔQPR) = 64/169

AB = 10 cm, BC = 7 cm and AC = 16 cm

Concept used:

The ratio of the areas of two similar triangles is equal to the ratio of the squares of the corresponding sides

Calculation:

ar(ΔABC)/ar(ΔQPR) = AC²/PR²

⇒ 64/169 = 162/PR2

⇒ 8/13 = 16/PR

⇒ PR = (13 × 16)/8 = 26 cm

∴ PR (in cm) is equal to 26 cm

Mistake PointsΔABC ~ ΔPQR is important 

It does not matter what is given in the ratio form, 

That is $\frac{\operatorname{ar}(\triangle \mathrm{ABC})}{\operatorname{ar}(\triangle \mathrm{QPR})}$

Hence we always solve the question according to ΔABC ~ ΔPQR.

Given:

The following bar graph shows the total number of youth (in lakhs) and the number of employed youth (in lakhs) in 5 states A, B, C, D, and E.

Calculation:

The total number of youth (in lakhs) in states A and E = 12 + 9 = 21

The total number of employed youth (in lakhs) in states A and E = 10.5 + 8 = 18.5

The percentage = (18.5/21) × 100 = $88\frac{2}{21}\%$

∴ The percentage of employed youth in states A and E taken together is $88\frac{2}{21}\%$

Given:

The given expression = (1.6)3 - (0.9)3 - (0.7)3

Formula used:

If a + b + c = 0, then a³ + b³ + c³ = 3abc

Calculation:

(1.6)3 - (0.9)3 - (0.7)3

= (1.6)3 + (- 0.9)3 + (- 0.7)3

= 3 × 1.6 × (- 0.9) × (- 0.7)  [∵ 1.6 - 0.9 - 0.7 = 0]

= 3.024

∴ The value of the given expression is 3.024

Given:

The given numbers are 15, 24, 28 and 32

Calculation:

15 = 3 × 5

24 = 2 × 2 × 2 × 3

28 = 2 × 2 × 7

32 = 2 × 2 × 2 × 2 × 2

LCM of 15, 24, 28 and 32 = 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 = 3360

The number will be = (3360 × x) + 7 [We need to find the number according to the options]

Put x = 3

So, the number = (3360 × 3) + 7 = 10087

∴ The least number is 10087

Given:

The cost price of each piece of article = ₹50

The total number of pieces = 40

Formula used:

S.P. = [(100 ± Profit%/Loss%)/100] × C.P.

Profit% = (Proft/C.P.) × 100

Where, C.P. = Cost price; S.P. = Selling price

Calculation:

The total cost price = 50 × 40 = ₹2000

The profit = $\left[\left(\frac{100+20}{100}×50 \right)×35\right]+\left[\left(\frac{100-10}{100}×50 \right)×5\right]-2000$

= $\left[\left(\frac{120}{100}×50\right)×35\right]+\left[\left(\frac{90}{100}×50\right)×5\right]-2000$

= (60 × 35) + (45 × 5) - 2000

= 2100 + 225 - 2000

= 325

The profit percentage = (325/2000) × 100 = 16.25%

∴ The overall profit percentage is 16.25%

Given:

The surface area of a sphere = x cm2

The volume of a sphere = y cm3

y = 14x

Formula used:

The surface area of a sphere = 4 × π × (radius)2

The volume of a sphere = (4/3) × π × (radius)3

Calculation:

Let, radius = R

So, 4πR² = x   .....(1)

Also, (4/3)πR³ = y

⇒ (4/3)πR3 = 14x  [∵ y = 14x]   .....(2)

Multiplying equation (1) by 14,

56πR2 = 14x   .....(3)

Justifying equations (2) and (3),

(4/3)πR3 = 56πR2

⇒ (4/3)R = 56

⇒ R = 42 cm

∴ The radius (in cm) of the sphere is 42 cm

Given:

The bar graph shows the exports of cars of type A and B (in ₹ millions) from 2014 to 2018.

Calculation:

The total exports (in ₹ millions) of cars of type A in 2016 and 2018 = 275 + 300 = 575

The total exports (in ₹ millions) of cars of type B in 2015 and 2017 = 250 + 275 = 525

The ratio = 575 : 525 = 23 : 21

∴ The ratio of the total exports of cars of type A in 2016 and 2018 to the total exports of cars of type B in 2015 and 2017 is 23 : 21

Given:

Total amount = ₹17,650

The rate of interest = 8.5%

Formula used:

S.I. = (P × R × T)/100

Where, S.I. = Simple interest; P = Total amount; R = Rate of interest; T = Time (years)

Calculation:

The total amount = Total simple interest + Total invested amount

= [(17650 × 8.5 × 5)/100] + 17650

= 7501.25 + 17650

= ₹25151.25

= ₹25151 (to nearest ₹)

∴ Seema will have ₹25151 after five years.

Given:

Total profit = ₹1,86,000

Calculation:

Let, total investment = 6 units

So, A invest = 6/3 = 2 [∵ $33\frac{1}{3}\%$ = 1/3]

B invest = (6 - 2)/4 = 4/4 = 1 [∵ 25% = 1/4]

C invest = 6 - (2 + 1) = 6 - 3 = 3

A : B : C = 2 : 1 : 3

Here, 6 units → ₹186000

∴ 2 units → (186000/6) × 2 = ₹62000

∴ A's share of the profit (in ₹) is ₹62000

The correct answer is 'No substitution required'.

Key Points

• The given sentence is grammatically correct.
• Here, everything is used properly.
• We know that after 'to' infinitive the base form of the verb (admit) is used.
• Thus, the correct answer is Option 4.
  

Correct Sentence: None of the boys was willing to admit that he was in the wrong.

The correct answer is 'Popular'.

Key Points

• The most appropriate synonym of the given word 'Trendy' is 'Popular'.
• Trendy: of, in, or pertaining to the latest trend or style. (नवीनतम प्रवृत्ति या शैली से संबंधित, में या उससे संबंधित)
• Example: the trendy young generation...
• Popular: liked by many people or by most people in a group. (लोकप्रिय, अधिकतर लोगों को पसंद)
• Example: a popular holiday resort...
  

Correct Answer: Popular.

Additional Information

• Let's look at the meaning of other words:
• Foreign: belonging to or connected with a country that is not your own. (स्‍वदेश से भिन्‍न देश का या उससे संबंधित; विदेशी)
• Common: happening or found often or in many places; usual. (प्रायः या बहुत सारे स्‍थानों पर पाया जाने या होने वाला; सामान्‍य, आम)
• Familiar: well known to you; often seen or heard and therefore easy to recognize. (सुपरिचित; जाना-पहचाना)

The correct answer is 'Whale sharks are caught commercially in some places around the world'.

Key Points

• The given sentence is in Active Voice. As per the question we have to change it into Passive Voice.
• The structure of the given sentence is as follows:
• Subject + V1 + Object. (Active Voice)
• Subject (Objective Case) + is/am/are + V3 + Object (Subjective Case). (Passive Voice)
• Example:
• Aastha teaches English. (Active Voice)
• English is taught by Aastha. (Passive Voice)
• The subject of the given sentence is 'They'.
• The object of the given sentence is 'Whale'.
• The subject will be put in place of the object and the object will be put in place of the subject.
• 'catch' will be changed into 'are caught'.
  

Correct Sentence: Whale sharks are caught commercially in some places around the world.

The correct answer is 'Aquarium'.

Key Points

• The most appropriate word for the given group of words is 'Aquarium'.
• It means 'a glass container filled with water, in which fish and water animals are kept'. (पानी से भरी शीशे की टंकी जिसमें मछली आदि जलजीवों को रखा जाता है; मछलीघर, जलजीवशाला)
• Example: The aquarium has many tanks of fish. 
  

Correct Answer: Aquarium.

Additional Information

• Let's look at the meaning of other words:
• Museum: a building where collections of valuable and interesting objects are kept and shown to the public. (बहुमूल्‍य और रोचक वस्‍तुओं का संग्रहालय और प्रदर्शन-स्‍थल; संग्रहालय, म्‍यूजि़यम)
• Aviary: a large cage or area in which birds are kept. (पक्षीशाला, दरबा)
• Reservoir: a large lake where water is stored to be used by a particular area, city, etc. [बड़ा जलाशय (जिसमें विशेष क्षेत्र, नगर आदि के लिए जल संचित हो)]

The correct answer is 'knocked at the door'.

Key Points

• The underlined part in the given sentence is grammatically incorrect.
• Here, 'knocked at the door' should be used instead of 'knock at the door'.
• The given sentence is in the simple past tense so the verb must be used in its past form (knocked) and not in the present form(knock).
• Thus, the correct answer is Option 4.
  

Correct Sentence: When Sirisha knocked at the door someone peeped through the window.

The correct answer is 'Protect'.

Key Points

• The most appropriate antonym of the given word 'Ransack' is 'Protect'.
• Ransack: to search a place, making it untidy and causing damage, usually because you are looking for something. (सामान को उलट-पुलट करते हुए और हानि पहुँचाते हुए किसी स्‍थान पर वस्‍तु विशेष की खोजबीन करना)
• Example: The house had been ransacked by burglars.
• Protect: to keep somebody/something safe; to defend somebody/something. (व्‍यक्ति या वस्‍तु को सुरक्षित रखना; व्‍यक्ति या वस्‍तु की रक्षा करना)
• Example: Parents try to protect their children from danger as far as possible.
  

Correct Answer: Protect.

Additional Information

• Let's look at the meaning of other words:
• Pilfer: to steal something in small quantity or of little value, especially from the place where you work. (छिटपुट चोरी, विशेषतः कार्यस्‍थल से)
• Raid: a short surprise attack on an enemy by soldiers, ships, or aircraft. (थल-सैनिकों, पानी के जहाज़ों या विमानों से शत्रु पर अचानक आक्रमण)
• Seize: to take hold of something suddenly and firmly; to grab something. (किसी वस्‍तु को एकाएक और कसकर पकड़ लेना; छीन लेना, झपट लेना)

The correct answer is 'To destroy early'.

Key Points

• The most appropriate meaning of the given idiom 'Nip in the bud' is 'To destroy early'.
• Nip in the bud: stop (something) immediately so that it does not become a worse problem. [(कुछ) तुरंत रोकना ताकि यह एक बदतर समस्या न बन जाए]
• Example: Inflation will only get worse if the government doesn't do something right now to nip it in the bud.
  

Correct Answer: To destroy early.

The erroneous part is 'a most luminous'.

Key Points

• The given sentence is grammatically incorrect.
• Here, 'the most luminous' should be used instead of 'a most luminous'.
• ‘Superlative adjective’ denotes the form of an adjective or adverb that expresses the highest or a very high degree of quality of a thing, person, etc.
• For example, most, best, worst, greatest, etc.
• However, we always place the definite article ‘the’ before any superlative adjective.
• Similarly, in the given sentence, ‘most’ is the superlative degree adjective.
• Thus, the correct answer is Option 2.
  

Correct Sentence: Athens was the most luminous of all city-states of ancient Greece.

The correct answer is 'Idol'.

Key Points

• The most appropriate word for the given group of words is 'Idol'.
• It means an image or representation of a god used as an object of worship. (पूजा की वस्तु के रूप में इस्तेमाल की जाने वाली भगवान की छवि या प्रतिनिधित्व)​
• Example - I would never stoop to bow down to a god of stone or an idol of wood or jewels.

Therefore, the correct answer is option 4.

Additional Information

• Let's look at the meaning of other words:
• Icon: a person or thing that is considered to be a symbol of something. (किसी वस्‍तु का प्रतीक बना कोई व्‍यक्ति या पदार्थ; प्रतिमा, मूर्ति)
• Model: a copy of something that is usually smaller than the real thing. [किसी वस्‍तु का नमूना, प्रतिरूप (प्रायः मूल वस्‍तु से छोटा); मॉडल]
• Temple: a building where people pray to a god or gods. (मंदिर, देवालय, पूजा-स्‍थली)

The correct answer is 'Ultimately'.

Key Points

• The most appropriate synonym of the given word 'Eventually' is 'Ultimately'.
• Eventually: in the end; finally. (अंत में; अंततोगत्‍वा)
• Example: He eventually managed to persuade his parents to let him buy a motorbike.
• Ultimately: in the end. (अंततोगत्‍वा, आख़िरकार)
• Example: Ultimately, the decision is yours.
  

Correct Answer: Ultimately.

Additional Information

• Let's look at the meaning of other words:
• Primarily: more than anything else; mainly. (मुख्‍य रूप से)
• Originally: in the beginning, before any changes or developments. (शुरु में, किसी भी परिवर्तन और विकास के पहले, मूल रूप से)
• Initially: at the beginning; at first. (शुरू या आरंभ में; पहले)