SSC GD Constable Previous Year Paper (Held on: 2nd December 2021 Shift 2)

The category represented by the letter 'f' is shown below:

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1. Musicians who are boys and sportspersons both → b
2. Boys who are musicians but not sportspersons → f
3. Boys who are sportspersons but not musicians → d
4. Sportspersons who are musicians but not boys → c

Hence, 'Boys who are musicians but not sportspersons' is the correct answer.

The logic followed here is:

• ‘Europe’ is related to ‘Switzerland’ → Switzerland is a mountainous Central European country.

Similarly,

• ‘Asia’ is related to ‘_______’ → Japan is an island country in East Asia.

Hence, 'Japan' is the correct answer.

The least possible Venn diagram is:

Conclusions:

I. No screw is a stencil. → Do not follow (As, there is no definite relation between screw and stencil. Hence, false)

II. Some pens are stencils. → Do not follow (As, there is no definite relation between pen and stencil. Hence, false) 

Hence, Neither conclusion I nor II follows.

The logic followed here is:

53 + 2³ = 53 + 8 = 61

61 + 33 = 61 + 27 = 88

88 + 43 = 88 + 64 = 152

152 + 53 = 152 + 125 = 277

277 + 63 = 277 + 216 = 493

Hence, '493' is the correct answer.

Eight friends are sitting in 2 rows facing each other.

1. A is sitting opposite to D and is a neighbour of B and E.
2. H and C are sitting at the right-most corners and E and F are sitting at the left-most corners of their respective rows.

    

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3. If G is sitting next to F.

   

Clearly, G is sitting opposite to B.

Hence 'G' is the correct answer.

Let us assume that the original price of the machine be Rs. x

A sold the machine to B at = Rs.(130/100) × x

And B sold the machine to C at = Rs. (130/100) × x

According to question:

(120/100) × (130/100) × x = 9360

⇒ x = (9360 × 130 × 120) ÷ (100 × 100)

⇒ x = 6000

The price at which A sell the machine = Rs. (130/100) × 6000 = Rs. 7800

Hence, '₹ 7,800' is the correct answer.

The logic followed here is:

Logic: 1st letter + 3 = 3rd letter; 2nd letter + 2 = 4th letter

1. BXEV → B + 3 = E; X - 2 = V
2. HDKF → H +3 = K; D + 2 = F
3. RNUP → R + 3 = U; N + 2 = P
4. TPWR → T + 3 = W; P + 2 = R

Hence, 'BXEV' is the odd one out.

• The logic followed here is:
• 36, 74, 55 → (36 + 74) ÷ 2 =  110 ÷ 2 = 55

Similarly,

• 40, 52, 46 → (40 + 52) ÷ 2 =  92 ÷ 2 = 46

Hence, '40, 52, 46' is the correct answer.

The logic followed here is:

Similarly,

Hence, 'CCQC' is the correct answer.

The logic followed here is:

11 × 1 - 2 = 11 - 2 = 9

9 × 2 - 3 = 18 - 3 = 15

15 × 3 - 4 = 45 - 4 = 41

41 × 4 - 5 = 164 - 5 = 159

Hence, '159' is the correct answer.

The figure from among the given options that can replace the question mark (?) in the following series is shown below:

As we move along the series, we see that the figure with boxes is itself rotating in 90° clockwise direction and changing its position by moving in clockwise direction.

The number of sides in the polygon in increasing by 1 and the polygon is changing its position by moving in anti-clockwise direction.

Hence, 'option 4' is the correct answer.

The logic followed here is:

Hence, 'UFW' is the correct answer.

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

Hence, 'option 1' is the correct answer.

The correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary is:

2. Router
3. Routine
4. Rubric
5. Ruin
6. Ruthless

Hence, '2, 4, 1, 5, 3' is the correct answer.

Given equation: 13 + 18 × 6 – 30 ÷ 6 = –90

After interchanging the signs, we get:

1. −, ÷

13 + 18 × 6 ÷ 30 - 6 = –90

⇒ 13 + 18 × 0.2 - 6 = –90

⇒ 13 + 3.6 - 6 = –90

⇒ 16.6 - 6 = –90

⇒ 10.6 ≠ -90

2. ×, ÷

13 + 18 ÷ 6 – 30 × 6 = –90

⇒ 13 + 3 – 30 × 6 = –90

⇒ 13 + 3 - 180 = -90

⇒ 16 - 180 = -90

⇒ -164 ≠ -90

3. +, −

13 - 18 × 6 + 30 ÷ 6 = –90

⇒ 13 - 18 × 6 + 5 = –90

⇒ 13 - 108 + 5 = –90

⇒ 18 - 108 = -90

⇒ -90 = -90

4. +, ×

13 × 18 + 6 – 30 ÷ 6 = –90

⇒ 13 × 18 + 6 – 5 = –90

⇒ 234 + 6 – 5 = –90

⇒ 240 – 5 = –90

⇒ 235 ≠ –90

Hence, '+, −' is the correct answer.

A dice (x) is rotated three times in similar manner. Two of its positions (x.1 and x.2) are given. The next possible position from the following options is:

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From dice x and x1, we get that 6 and 1 are opposite faces.

From dice x1 and x2, we get that 2 and 5 are opposite faces.

Remaining faces 4 and 3 will be opposite, to each other.

So, next dice must have either 6 or 1 at the right hand side position.

As in the options, we see only option 4 has 6 at the right hand side position with 3 at the front face and 5 at the top.

Hence, 'option 4' is the correct answer.

Given sequence: Q _ P _ M _ A _ T _ Q A _ T M

1. A T Q P M Q → Q A P T M - Q A P T M - Q A Q T M
2. A T Q P Q P → Q A P T M - Q A P T Q - Q A P T M
3. A T Q P M P → Q A P T M - Q A P T M - Q A P T M
4. A Q T P M P → Q A P Q M - T A P T M - Q A P T M

• In option 3, QAPTM is repeated.

Hence, 'A T Q P M P' is the correct answer.

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

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Clearly, K is the paternal uncle of A.

Hence, 'Paternal uncle' is the correct answer.

The logic followed here is:

Similarly,

Hence, 'BDKMNPBDJL' is the correct answer.

The paper when unfolded will appear as shown below:

Hence, 'option 4' is the correct answer.

The image embedded in given figure is as shown below:

Hence, 'option 2' is the correct answer.

The logic followed here is:

Similarly,

Hence, 'DKUSRZ' is the correct answer.

Akram, Nagesh, Girish, Vikram and Satpal are sitting at the five corners of a pentagon shaped table; all are facing the centre of the table.

1. Satpal is to the immediate left of Nagesh.

2. Akram is second to the left of Satpal.
   

3. Girish is third to the left of Vikram.
   

Akram is sitting second to the right of Nagesh.

Hence, 'Akram' is the correct answer.

The logic followed here is:

• 13 : 163 → 13² - 6 = 169 - 6 = 163
• 9 : 75 → 92 - 6 = 81 - 6 = 75

Similarly,

• 11 : ? → 112 - 6 = 121 - 6 = 115

Hence, '115' is the correct answer.

Vowels are coded as:

The logic followed here is:

Similarly,

Hence, '20391022' is the correct answer.

The correct answer is Kidneys.

Key Points

• Adrenal glands, also known as suprarenal glands, are small, triangular-shaped glands located on top of both kidneys.
• Adrenal glands produce hormones that help regulate your metabolism, immune system, blood pressure, response to stress and other essential functions.

Additional Information

Functions of Hormones 

The correct answer is Venus.

Key Points

• Shukrayaan is mission to Venus is to study the planet for more than four years to be launched either in 2024 or in 2026 during the optimal launch window which comes about every 19 months.
• Please note that the launching of the mission during the optimal launch window will minimize spacecraft fuel use during a planetary transit.
• ISRO has short-listed 20 space-based experiment proposals, for its proposed Venus orbiter mission ‘Shukrayaan’.
• The possible detection of phosphine in Venus’ upper atmosphere shows prospects of life there.
• 20 proposals were received, including collaborative contributions from Russia, France, Sweden, and Germany for the mission.
• The scientific objectives of the mission:
• Investigation of the surface processes and shallow subsurface stratigraphy.
• Study solar wind interaction with Venusian Ionosphere.
• Study the structure, composition, and dynamics of the planet’s atmosphere.
• Synthetic aperture radar (SAR) will be used as an instrument to examine the Venusian surface.

The correct answer is fifth.

Key Points

• Railways’ Chandigarh Railway Station has been awarded a 5-star 'Eat Right Station' certification for providing high-quality, nutritious food to passengers.
• This certification is granted by FSSAI to railway stations adhering to standard food storage and hygiene practices.
• The certification is awarded to railway stations that set benchmarks in providing safe and wholesome food to passengers.

Important Points

• ​The station is awarded a certificate upon a conclusion of an FSSAI-empanelled third-party audit agency with ratings from 1 to 5.
• The certification is part of the 'Eat Right India' movement- a large-scale effort by FSSAI to transform the country's food system to ensure safe, healthy and sustainable food for all Indians.
• Chandigarh Railway Station becomes the fifth station in India to get this recognition.

Additional Information 

• The other railway stations with this certification include:

1. Anand Vihar Terminal Railway Station (Delhi).
2. Chhatrapati Shivaji Terminus (Mumbai).
3. Mumbai Central Railway Station (Mumbai).
4. Vadodara Railway Station.

The correct answer is 1765.

Key Points

• In 1765 Mughal emperor Shah Alam II issued a farman granting Diwani of Bengal, Bihar and Odisha to the East India Company.
• Shah Alam II agreed to Reside at Allahabad, to be ceded to him by the Nawab of Awadh, under the Company's protection.
• Issue a Farman granting the Diwani of Bengal, Bihar and Orissa to the East India Company in lieu of an annual payment of Rs 26 lakh.
• A provision of Rs 53 lakh to the Company in return for Nizamat functions (military defence, police, and administration of justice) of the said provinces.

Additional Information

• The Treaty of Allahabad, 1765:
• Robert Clive concluded two important treaties at Allahabad in August 1765
• With the Nawab of Awadh and,
• With the Mughal Emperor, Shah Alam II.  Nawab Shuja-ud-Daula agreed to:
• Surrender Allahabad and Kara to Emperor Shah Alam II.
• Pay Rs 50 lakh to the Company as war indemnity
• Give Balwant Singh, Zamindar of Banaras, full possession of his estate.

The correct answer is Birbal.

Key Points 

• The real name of Birbal was Mahesh Das.
• Mahesh Das was a skilled poet and is known for his charismatic wit and humour.
• Birbal was a trusty advisor.
• The Emperor conferred on him with the title Birbal.
• Stories of Akbar and Birbal are extremely popular in India.

Additional Information 

Akbar (1542- 1605)

• He reigned from 1556 to 1605.
• He defeated Hemu at the second battle of Panipat in 1556.
• He constructed Fatehpur Sikri and made it his capital in 1569.
• Buland Darwaza was constructed at the gate.
• He started a new religion Din-i Ilahi in 1582.
• Bīrbal was the only Hindu follower of this religion.
• Abul Fazl wrote his biography titled Akbarnama.
• Nine of his courtiers were known as Navratnas.
• They were Todar Mal, Abul Fazal, Faizi, Birbal, Tansen, Abdur Rahim Khana-i-Khana, Mullah-do-Pyaza, Raja Man Singh, and Fakir Aziao-Din
• He married a Hindu princess Harka Bai who is commonly known as Jodha Bai.
• Akbar captured the historic fortress of Chitor in 1568.
• He abolished the pilgrimage tax by Hindus in 1563.
• He also abolished the Jizyah tax in 1564.
• He also introduced the Mansabdari System or the rank-holder system to organize the nobility and army.

The correct answer is Parthiv Patel.

Important Points

• Wicketkeeper-batsman Parthiv Patel has announced his retirement from all forms of cricket.
• Parthiv featured in 25 Tests, 38 ODIs and a couple of T20Is for India.
• In domestic cricket, he featured in 194 first-class matches for Gujarat.
• He broke into the Indian team in 2002, becoming the youngest wicketkeeper in Tests, after making his debut at 17 years and 153 days.

Additional Information

• Sudeep Tyagi is an Indian former international cricketer.
• He is a right-arm fast-medium bowler and a right-handed lower-order batsman.
• Mahendra Singh Dhoni is an Indian former professional cricketer who was captain of the Indian national cricket team in limited-overs formats from 2007 to 2017 and in Test cricket from 2008 to 2014.
• He is a right-handed wicket-keeper batsman.
• Suresh Raina is a former Indian international cricketer. He occasionally served as stand-in captain for the Indian men's national cricket team during the absence of the main captain.

The correct answer is Pinjore, Haryana.

• The ancient temple devoted to Bhima Devi located at Pinjore, Haryana.
• Alexander Cunningham, during his explorations in 1878-79, found in 27-line inscription of 10th century AD mentioning Panchapura from which modern name Pinjore is derived.
• The mention of Panchpura in the Handi stone inscriptions (1167 AD) also seem to refer to this place.
• The name Pinjore also appears to be based on the myth that the Pandavas had stayed here during the course of their exile.
• Later on, this place also came to be known as Bhima Nagar after a much revered local temple that came to be created at this ancient site.

The correct answer is natural tar.

Key Points

• The 'Great Bath' of Mohenjodaro was made water-tight with a layer of natural tar.
• In Mohenjodaro, close to the Great Granary is the public bath, also called the Great Bath.
• It is a large and elaborate bath and without doubt the earliest public water tank in the ancient world.
• Two wide staircases lead down into the tank from the north and south.
• There exists a brick edging across the entire width of the pool for people to move along the width without actually stepping into the pool.
• The floor of the tank is water-tight due to finely fitted bricks with gypsum plaster, and a thick layer of natural tar laid along the sides and the floor. The use of stone is not present.
• A massive well in a neighboring room provided water.
• This bath would have been used for special religious functions or rituals.

Additional Information

• The Indus Valley Civilization extended from present-day north-east Afghanistan to Pakistan and north-west India.
• The Indus Valley Civilization is an ancient civilization that flourished in the Indian subcontinent between 3,000 BC and 1,500 BC.
• Mohenjodaro (Pakistan) is situated on the banks of the river Indus. Discovered in 1922 by R. D. Banerjee in the Larkana district of Sindh. Mohenjodaro means "Mound of the Dead". The most important structure is the huge bathhouse and the huge granary.
• Daya Ram Sahni discovered the Harappan Civilization in 1921. It is situated on the banks of the Ravi river in the Montgomery district of Punjab (Pakistan).
• Important findings are sandstone sculptures of human anatomy, granary, and bullock cart.

The correct answer is trust.

Key Points

• The Economic Survey of India 2019-20 introduced the idea of trust as a public good, that could be enhanced with greater use.
• As per the Economic Survey of India 2019-20, Two-third contribution of the service sector to the total FDI inflows into India.
• India has attracted the highest-ever total FDI inflow of $81.72 billion during the financial year 2020-21 and it is 10\% higher as compared to the last financial year 2019-20 (US$ 74.39 billion).
• In terms of top investor countries, ‘Singapore’ is at the top with 29%, followed by the U.S.A (23%) and Mauritius (9%) for the F.Y. 2020-21.
• Foreign direct investments (FDI) into the country grew 19% to $59.64 billion during 2020-21 on account of measures taken by the government on the fronts of policy reforms, investment facilitation and ease of doing business.
• The computer software and hardware sector attracted the highest inflows with around 44% share of the total FDI equity inflows.

Additional Information

• The economic survey is an annual report card of the economy.
• It represents a day before the budget examines the performance of each and every sector and then suggests future moves.
• The economic survey was de-linked from the Budget in 1964.
• And unveiled in advance in order to provide a context for the latter.
• Last year the theme was Saving Lives and Livelihoods.
• The central theme of the Economic Survey 2021-22 is the "Agile Approach".
• Another theme highlighted in this Economic Survey relates to the art and science of policy-making under conditions of extreme uncertainty.

The correct answer is Infinite images.

Key Points

• Infinite images are formed if two parallel mirrors face each other.
• Because an image formed by one mirror can act as an object for the second mirror.
• And every image formed by the second mirror can act as an object for the first mirror.

Additional Information

• Reflection From Plane Mirror:
• The image is virtual and laterally inverted.
• The size of the image is equal to that of the object.
• The distance of the image from the mirror is equal to the distance of the object from the mirror.
• If an object moves towards (or away from) a plane mirror with speed u, relative to the object, the image moves towards (or away) with a speed of 2u.

The correct answer is 1913.

Key Points

• The Olympic rings were publicly presented for the first time in 1913.
• In the centre of a white background, five rings interlaced: blue, yellow, black, green and red.
• Blue, yellow, black, green, and red are the order of the color of the Olympic logo rings.
• It represents five continents: Asia, Africa, America, Australia, and Europe.
• The Olympic Charter once ascribed a ring color to each continent: blue for Europe, yellow for Asia, black for Africa, green for Oceania (or Australia), and red for America.

The correct answer is Jasbinder Bilan.

Key Points

• India-born author Jasbinder Bilan has bagged a coveted UK children's book award for her debut novel 'Asha and the Spirit Bird'.
• Bilan will receive 5,000 pounds as the winner of the award.
• Bilan's book was shortlisted from 144 entries alongside 'Crossfire' by Malorie Blackman, 'In the Shadow of Heroes' by Nicholas Bowling and 'Furious Thing' by Jenny Downham.

Additional Information

• The full name of author Jhumpa Lahiri is Jhumpa Nilanjana Sudeshna Lahiri.
• Jhumpa Lahiri was born in 1967 in London.
• Her first novel was 'Namesake' published in 2003.
• She won Pulitzer Prize for her debut short story collection ‘Interpreter of Maldives’ in 1999.
• She was nominated for the man booker’s prize in 2013 for her much-anticipated novel ‘The Lowland’.
• Anita Desai, born Anita Mazumdar is an Indian novelist and the Emerita John E. Burchard Professor of Humanities at the Massachusetts Institute of Technology.
• As a writer, she has been shortlisted for the Booker Prize three times.
• In 2014, She received the Padma Bhushan Award.
• Arundhati Roy won Man Booker Prize in 1997 for her book "The God of Small Things"
• "The God of Small Things" is a story about the childhood experiences of fraternal twins whose lives are destroyed by the "Love Laws" that lay down "who should be loved, and how. And how much."
• The book explores how small things affect people's behaviour and their lives.

The correct answer is Madhya Pradesh.

Key Points

• As per the biennial 'India State of Forest Report (ISFR)' 2019, in terms of forest cover as a percentage of total geographical area.
• Forest Cover (Percentage):
• Mizoram (85.4%)> Arunachal Pradesh (79.63%)> Meghalaya (76.33%)

Confusion Points

• Forest Cover (Area-wise) :
• Madhya Pradesh> Arunachal Pradesh> Chhattisgarh> Odisha> Maharashtra.

Additional Information

The Indian state of forest report (ISFR) -​

• Maharashtra has contributed a modest 95.56 sq km or 24 times the area of Lonar wildlife sanctuary in Buldhana district.
• According to The Indian State of Forest Report (ISFR)-2019, Maharashtra's forest covers in the analysis period was  50,777.56 sq km, which is 16.50% of the state geographical area of 3,07,713sqkm.
• As per the last ISFR-2017, the states forest cover was 50,682 sq km.​
• Dependence of fuelwood on forests is highest in the State of Maharashtra, whereas, for fodder, small timber and bamboo, dependence is highest in Madhya Pradesh.
• It has been assessed that the annual removal of the small timber by the people living in forest fringe villages is nearly 7% of the average annual yield of forests in the country.
• Maharashtra is ranked second among the States in terms of the recorded forest area.​

The correct answer is Paul R Milgrom and Robert B Wilson.

Key Points

• The 2020 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel has been awarded to Paul R. Milgrom and Robert B. Wilson 'for improvements to auction theory and inventions of new auction formats'.
• In 1968, Sveriges Riksbank (Sweden’s central bank) established the Prize in Economic Sciences in Memory of Alfred Nobel, founder of the Nobel Prize.
• The Prize is based on a donation received by the Nobel Foundation in 1968 from Sveriges Riksbank on the occasion of the Bank’s 300th anniversary.
• The first Prize in Economic Sciences was awarded to Ragnar Frisch and Jan Tinbergen in 1969.

Additional Information

• Nobel Prize Winner Lists 2021

The correct answer is Per Capita Income.

Key Points

• The main criterion used by the World Bank in classifying different countries is the per capita income or average income of a person in a country.
• This criterion is used by the World Bank in its World Development Reports.
• Per capita income (PCI) or total income measures the average income earned per person in a given area in a specified year.
• It is calculated by dividing the area's total income by its total population.

Additional Information

• Gross national product (GNP) is an economic statistic that includes GDP, plus any income earned by a residents from overseas investments, minus income earned within the domestic economy by foreign residents.
• Gross domestic product (GDP) is the value of a nation's finished domestic goods and services during a specific time period.

The correct answer is Article 74.

Key Points

• Article 74 provides for the following:
• The President, who shall act in line with such advice when performing his duties, shall be assisted and advised by a Council of Ministers, headed by the Prime Minister
• With the condition that the President may ask the Council of Ministers to reevaluate such advice, generally or otherwise, and the President must follow the advice provided upon such reevaluation.
• No court shall investigate as to whether any and if so, what, advice was provided to the President by Ministers.

Additional Information

• Article 62: Time of holding election to fill vacancy in the office of President and the term of office of person elected to fill casual vacancy. (1) An election to fill a vacancy caused by the expiration of the term of office of President shall be completed before the expiration of the term.
• The electoral college of India's President is governed by Article 54 of the Indian Constitution.
• According to this article, the President is elected by the electoral college, which consists of the members listed below.
• Article 81 of the Indian Constitution defines the makeup of the House of The people, Lok Sabha.

The correct answer is National Stock Exchange of India Limited.

Key Points

• Receivables Exchange of India Ltd (RXIL) was incorporated on February 25, 2016 as a joint venture between Small Industries Development Bank of India (SIDBI) and National Stock Exchange of India Limited (NSE).

Additional Information

• The National Stock Exchange is a  government-owned stock exchange in India.
• It is located in Mumbai, Maharashtra.
• It was established in 1992.
• It uses NIFTY 50 as its index.
• Nifty was introduced by NSE on April 21, 1996.
• It represents the weighted average of 50 Indian Company Stocks across 24 sectors, which account for around 60% of the market capitalization.
• ​SIDBI was established with the mission of facilitating and strengthening the flow of credit to Micro, Small and Medium Enterprises.
• It is a statutory body set up under an act of the Indian Parliament in 1990.
• It was set up on 2nd April 1990.
• Headquartered- Lucknow.

The correct answer is Manila (Philippines).

Key Points

• Manila North Harbor is located in the Tondo district on the north side of the Pasig river,
• Manila South Harbor in the Port Area district on the south side.
• Situated between these two, the Manila International Container Terminal is the 38th busiest container port in the world.
• Hence it is not located in the Indian ocean.

Additional Information

The correct answer is Elephanta Island.

Key Points

• Elephanta Caves are a UNESCO World Heritage Site and a collection of cave temples predominantly dedicated to the Hindu god Shiva.
• They are on Elephanta Island, or Gharapuri, in Mumbai Harbour, 10 kilometres east of Mumbai in the Indian state of Mahārāshtra.

Additional Information

• Ellora is a UNESCO World Heritage Site located in the Aurangabad district of Maharashtra, India.
• It is one of the world's largest rock-cut monastery-temple cave complexes, featuring Hindu, Buddhist, and Jain monuments, and artwork, dating from the 600–1000 CE period.
• The Ajanta Caves are approximately 30 rock-cut Buddhist cave monuments that date from the 2nd century BCE to about 480 CE in the Shambha Ji Nagar district of Maharashtra state of India.
• The caves include paintings and rock-cut sculptures described as among the finest surviving examples of ancient Indian art, particularly expressive paintings that present emotions through gesture, pose, and form.

The correct answer is Rule 8.

Key Points

• Under Rule 8 of the Procedure and Conduct of Business in the Council of States (Rajya Sabha), the Chairman, Rajya Sabha nominates six members on the panel of Vice-Chairmen.
• One of whom presides over the House in the absence of both the Chairman and the Deputy Chairman.
• When neither the Chairman nor the Deputy Chairman and none of the Vice Chairmen is present to preside, the House may decide about any other member present to preside.

Additional Information

• Rules of Procedure and Conduct of Business have been formulated under Article 118(1) of the Constitution wherein each House of Parliament is required to make rules for regulating its procedure and conduct of business.
• Further, according to Article 118(3), the president, after consultation with the chairman of the council of states and the speaker of the house of the people, may make rules as to the procedure with respect to joint sittings of, and communications between, the 2 houses.
• Speaker in Lok Sabha and Chairman in Rajya Sabha are the final interpreters of provisions of rules of procedure and conduct of business.
• Rules committee considers the matters of procedure and conduct of business in the House and recommends necessary amendments or additions to the Rules of the House.

The correct answer is bacterium.

Key Points

• The disease scrub typhus is caused by a type of bacterium.
• Scrub typhus is a mite-borne acute febrile infectious illness that is caused by Orientia tsutsugamushi.
• Gram-negative coccobacillus is antigenically distinct from the typhus group rickettsiae.
• Orientia tsutsugamushi is maintained by transovarial transmission in trombiculid mites.
• Three strains of Orientia tsutsugamushi – Karp, Gilliam, and Kato.

Additional Information

• The most common symptoms of scrub typhus include fever, headache, body aches, and sometimes a rash.
• People with severe illness may develop organ failure and bleed, which can be fatal if left untreated.
• Most cases of scrub typhus occur in rural areas of Southeast Asia, Indonesia, China, Japan, India, and northern Australia.
• Scrub typhus should be treated with the antibiotic doxycycline.
• Doxycycline can be used in persons of any age.
• People who are treated early with doxycycline usually recover quickly.

The correct answer is Tripura.

Key Points

• The former princely state of Tripura in the north-eastern part of India was ruled by Manikya dynasty.
• Ratna Fa was the 145th king of Twipra and he was the first to assume the title Manikya and as such can be considered the founder of the Manikya dynasty.
• The first king of Twipra is Chandra, the moon himself but the list of historical begins with Ratna Fa only.

Additional Information

• Tripura:
• Agartala is the capital of Tripura.
• It is bordered by Bangladesh, Mizoram, and Assam.

The correct answer is Edwin Lutyens.

Key Points

• Edwin Lutyens is an architect credited with planning and designing major parts of New Delhi’s buildings during the British period
• The designer was Sir Edwin Lutyens, an Englishman who designed many other war memorials and was also the chief planner of New Delhi.
• It is ocated at the middle of a hexagonal complex with a diameter of 625m and a total area of 360,000 m2, the India Gate is 42m in height and 9.1m in width.
• The historic India Gate, an arch gate made using sandstone, is a war memorial situated in the Rajpath area, Delhi.
• It was built to commemorate the Undivided British Army soldiers who laid down their lives during the First World War and the Third Anglo-Afghan War of 1919.

Additional Information 

• Sir Herbert Baker was an English architect remembered as the dominant force in South African architecture for two decades.​
• Frederick Gilbert worked on many designs in Minnesota including the Minnesota State Capital Building.
• Elisabeth Lutyens is famous especially for his planning of New Delhi and his design of the Viceroy's House there.

The correct answer is Dr. NS Dharmashaktu.

Key Points

• The International Gandhi Awards for Leprosy was awarded to Dr N.S. Dharmashaktu and the Leprosy Mission Trust in New Delhi on 6 Feb 2020.
• The award was presented by President Ram Nath Kovind.
• The International Gandhi Awards for Leprosy commemorates the compassion that Mahatma Gandhi possessed and his services towards people with leprosy.

Additional Information

• World Leprosy Day is celebrated on the last Sunday of January every year all over the world to increase knowledge about it and propagate the need and importance of eradicating the disease.
• It was observed on 30 January in the year of 2021.
• There is no fix date for World Leprosy Day.
• It is celebrated on last Sunday of January.

The correct answer is Pankaj Advani.

Key Points 

• Pankaj Arjan Advani is an Indian billiard and former professional snooker player.
• He is a 23-time International Billiards and Snooker Federation world champion. He has won 16 billiards world titles, the IBSF World Billiards Championship on 15 occasions, and the World Team Billiards Championship once.
• Cue sports are a wide variety of games of skill played with a cue, which is used to strike billiard balls and thereby cause them to move around a cloth-covered table bounded by elastic bumpers known as cushions.

Additional Information

• Krishan Bahadur Pathak is an Indian field hockey player who plays as a goalkeeper for the Indian national team.
• Naib Subedar Deepak Punia, is an Indian freestyle wrestler and Junior Commissioned Officer in the Indian Army who won a silver medal at the 2019 World Wrestling Championships in the freestyle 86 kg category and secured a place in the 2020 Summer Olympics.
• Bhakti Sharma is an Indian Open water swimmer.
• She is the first Asian woman and the youngest in the world to set a record in open swimming in Antarctic waters.

Given:

Given discounts are 40% and 20%.

Concept used:

Final discount percentage after two successive discounts of A% and B% = $(A + B - {AB \over 100})\%$

Calculation:

Final discount = 40 + 20 - (40 × 20/100)

⇒ 60 - 8 = 52%

∴ 52% is the single discount equivalent to a series of discounts of 40% and 20%.

Given:

Expenditure = 120% more than Savings. 

Income and Expenditure increased by 25% and 30%.

Concept used:

Income = Expenditure + Savings  

Calculation:

Let, the savings be Rs. 100.

Expenditure = 100 + 100 × 120% = Rs. 220

Income = 100 + 220 = Rs. 320

New income = 320 + 320 × 25%

⇒ Rs. 400

New expenditure = 220 + 220 × 30%

⇒ Rs. 286

So, new savings = 400 - 286 = Rs. 114

Now, her savings increased by = ${{114- 100} \over 100} \times 100\%$

⇒ 14%

∴ Her savings increased by 14%.

Given:

Seller sells a part of 80 kg of rice at 15% profit and the rest at 5% loss.

Seller gains 12% on the whole. 

Calculation:

Using allegation method, we have found that the ratio of the quantities that are sold at 15% to 5% loss =  17 : 3

Now, the quantity of rice sold at 15% profit

⇒ 80 × 17/(17 + 3) = 68 kg

∴ The quantity of rice sold at 15% profit is 68 kg.

Given:

A certain sum invested at a rate of 5% per annum on simple interest (SI) for 2 years 

Same sum invested for the same period at a compound interest (CI) rate of 4% per annum. 

SI = ₹ 184 + CI

Concept used:

Simple Interest (SI) = (P × R × T)/100

Amount = P + SI

Where, P = Principal amount; R = Rate of interest per year;

T = Time (in years)

In case of the compound interest,

Amount = P(1 + R/100)^N

CI = P(1 + R/100)^N - P

Where, P = Principal amount; R = Rate of interest per year;

N = Time (in years) 

Calculation:

Let, the principal amount = P

SI on P at 5% p.a. for 2 years

⇒ (P × 5 × 2)/100

⇒ 10P/100 = 0.1P

CI on P at 4% p.a. for 2 years

⇒ P(1 + 4/100)² - P

⇒ P(1 + 1/25)2 - P

⇒ P(26/25)2 - P

⇒ P[(26/25)2 - 1] 

⇒P(676/625 - 1)

⇒ P × 51/625  = 0.0816P

According to the question,

0.1P - 0.0816P = 184

⇒ 0.0184P = 184

⇒ P = 184/0.0184

⇒ P = 10,000

∴ The sum invested is ₹ 10,000.

Given:

LCM = 3564, HCF = 81

The numbers are 324 and x.

Concept used:

LCM × HCF = The Product of two numbers

Calculation:

According to the concept,

324 × x = 3564 × 81

⇒ x = (3564 × 81)/324

⇒ x = 891

Now, the sum of the digits of x = 8 + 9 + 1 = 18

∴ The sum of the digits of x is 18.

Shortcut Trick

Radha's efficiency = 1/2 × Kirti's efficiency

Radha takes 30 days to complete the work alone.

 

Radha and Kirti can complete the work together in

⇒ 30/(1 + 2) = 30/3 = 10 days

<br>

Alternate Method

Given:

Radha is half as efficient as Kirti.

Radha will take 30 days to complete a task alone.

Concept used:

Total work = Efficiency (Work done per day) × Total time taken

Efficiency is work done per day.

Efficiency is inversely proportional to the time taken to complete a particular task.

Calculation:

Time taken by Kriti to complete the work alone = 30 ÷ 2 = 15 days

Let, the total work be 30 units.

Efficiency of Kriti = 30/15 = 2 units

Efficiency of Radha = 30/30 = 1 unit

Now, working together, they will finish the work in = 30/(2 + 1)

⇒ 10 days

∴ They will take 10 days to complete the work.

Given:

At downstream, covers a distance of 12 km in 30 minutes 

At upstream, at the same speed, covers 12 km in 36 minutes.

Concept used:

Upstream speed = (B - R) km/h

Downstream speed = (B + R) km/h

Where, B = Speed of the boat in still water

R = Speed of the stream

Time × Speed = Distance

Calculation:

Let, the speed of the boat in still water and that of the stream be B and R km/h respectively.

According to the question,

(B + R) × 30/60 = 12

⇒ (B + R) = 12/0.5

⇒ (B + R) = 24     ....(1)

(B - R) × 36/60 = 12

⇒ (B - R) = 12 × 60/36

⇒ (B - R) = 20     ....(2)

Now, (1) + (2),

B + R + B - R = 24 + 20

⇒ 2B = 44

⇒ B = 44/2 = 22 km/h

∴ The speed of the boat in still water is 22 km/h.

Given: 

Borrowed sum = Lend sum = ₹ 50,000 

Borrows for 3 years at 4% p.a. SI

Lends it for 3 years at $6\frac{1}{4}\%$ p.a. SI

Concept used:

SI = (P × R × T)/100

Amount = P + SI

Where, P = Principal amount; R = Rate of interest per year;

T = Time (in years)

Calculation:

SI on ₹ 50,000 for 3 years at 4% p.a.

⇒ (50000 × 4 × 3)/100 = ₹ 6000

SI on ₹ 50,000 for 3 years at $6\frac{1}{4}\%$ i.e. 6.25% p.a.

⇒ (50000 × 6.25 × 3)/100 = ₹ 9375

Gain per year = (9375 - 6000)/3

⇒ ₹1125

∴ His gain in the transaction per year is ₹1125.

Concept used:

Consecutive even numbers are (x - 2), x, (x + 2) etc.

Formula:

Total = Average × Number of entities

Calculation:

Let, the consecutive even numbers be (x – 6), (x – 4), (x – 2),

x, (x + 2), (x + 4), (x + 6), (x + 8).

According to the question,

⇒ x – 6 + x – 4 + x – 2 + x + x + 2 + x + 4 + x + 6 + x + 8 = 65 × 8

⇒ 8x + 8 = 520

⇒ 8x = 512

⇒ x = 512/8 = 64

Last number of the series = (x + 8) = 64 + 8 = 72

Now, next four even numbers are

(x + 10), (x + 12), (x + 14), (x + 16) = 74, 76, 78, 80

Sum (74, 76, 78, 80) = 308

Now, the number of terms in the series

⇒ Previous 8 consecutive even numbers + Next four consecutive even numbers

⇒ 8 + 4 = 12

Now, the average of all the numbers

⇒ (Sum of previous 8 consecutive even numbers + Sum of next consecutive even numbers)/Number of terms in series

⇒ {(65 × 8) + 308}/12

⇒ 69

∴ The average of all the numbers is 69.

Shortcut Trick

Given: Height h = Radius r → Slant height l = √(r² + r²) = r√2

Curved Surface Area (CSA) = πrl = π × r × r√2 = πr²√2

Equating: πr²√2 = 25√2π ⇒ r² = 25 ⇒ r = 5 cm

Volume = (1/3)πr²h = (1/3) × (22/7) × 25 × 5 = 2750 ÷ 21 ≈ 130.95 cm³

∴ The correct answer is 130.95 cm³.

Alternate Method

Given: Curved Surface Area (CSA) = 25√2 π cm², Height (h) = Radius (r).

Formula Used: CSA = πrl, Slant height l = √(r² + h²), Volume = (1/3)πr²h.

⇒ Since h = r, l = √(r² + r²) = √(2r²) = r√2

⇒ CSA = π × r × r√2 = πr²√2

⇒ 25√2 π = πr²√2

⇒ r² = 25

⇒ r = 5 cm and h = 5 cm

⇒ Volume = (1/3) × (22/7) × 5² × 5

⇒ Volume = (1/3) × (22/7) × 125 = 2750 ÷ 21

⇒ Volume ≈ 130.9523... cm³

∴ The correct answer is 130.95 cm³.

Additional Information

Total Surface Area of a Cone

It is the sum of the curved surface area and the base area: TSA = πrl + πr² = πr(l + r).

Relation between Cone and Cylinder

The volume of a cone is exactly 1/3^rd of the volume of a cylinder having the same radius and height.

Slant Height Calculation

In a right circular cone, the slant height (l), height (h), and radius (r) form a right-angled triangle: l² = h² + r².

Given:

In still water, speed = 9 km/h.

Time for 33 km downstream = Time for 21 km upstream

Concept used:

Upstream speed = (B - R) km/h

Downstream speed = (B + R) km/h

Where, B = Speed of the boat in still water

R = Speed of the stream

Distance = Speed × Time

Calculation:

Let the speed of the stream be R km/h.

Upstream speed = (9 - R) km/h

Downstream speed = (9 + R) km/h

According to the question,

33/(9 + R) = 21/(9 - R)

⇒ 11/(9 + R) = 7/(9 - R)

⇒ 63 + 7R = 99 - 11R

⇒ 18R = 36

⇒ R = 36/18

⇒ R = 2

∴ The speed of the stream is 2 km/h.

Given:

Store offers 19% discount on its articles. 

For payment using an online wallet, a further discount of 2% on the reduced price.

A customer purchases items worth ₹ 18000 using payment through an online wallet.

Concept used:

Discount% = ${(Marked\ Price\ -\ Selling\ Price) \over Marked\ Price} \times 100\%$

SP = MP - MP × Discount%

Calculation:

Final discount for a customer who pays by Online wallet 

⇒ 19 + 2 - (19 × 2)/100 = 20.62%

Now, the amount paid by the customer

⇒ 18000 - 18000 × 20.62%

⇒  ₹14288.40

∴ The amount to be paid by the customer is ₹14288.40.

Given:

An amount to ₹ 7485 after 3 years at SI

The same amount to ₹ 9960 after 8 years at SI

In both cases, rate of interest is same. 

Concept used:

Simple Interest, SI = (P × R × T)/100

Amount = P + SI

Where, P = Principal amount; R = Rate of interest per year;

T = Time 9in years)

Calculation:

Interest in (8 - 3) i.e. 5 years = 9960 - 7485 = ₹ 2475

Interest per year = 2475/5 = ₹495

Let, the principal amount and the rate of interest be ₹ P and R% respectively.

According to the question,

(P × 1 × R)/100 = 495

⇒ PR/100 = 495     ---(1)

According to the question,

P + (P × 3 × R)/100 = 7485

⇒ P + 3PR/100 = 7485     ---(2)

P + (P × 8 × R)/100 = 9960

⇒ P +8PR/100 = 9960     ---(3)

Now, (2) + (3),

⇒ (P + 3PR/100) + (P +8PR/100) = 7485 + 9960

⇒ 2P + 11PR/100 = 17445     ---(4)

Substituting equation (1) in equation (4),

⇒ 2P + (11 × 495) = 17445

⇒ 2P = 17445 - (11 × 495)

⇒ 2P = 12000

⇒ P = 6000

Putting P = 6000 in equation (1),

(6,000 × R)/100 = 495

⇒ R = 495/60 = 8.25

So, the revised simple interest rate = 8.25 × 2 = 16.5%

Now, the amount in 7 years

⇒ 6000 + (6000 × 16.5 × 7)/100

⇒ ₹12930

∴ The amount becomes ₹12930.

Alternate Method⇒ Amount for 8 yr = 9960   --- (eq 1)

⇒ Amountthe  for 3 yr = 7485   --- (eq 2)

Subtracting (eq 1) and (eq 2) we get

⇒ SI for 5 year = 2475

⇒ SI for 1 year = 495

⇒ SI for 3 year = 1485

We know that Amount = SI + P (for 3 yr)

As per question amount for 3 yr = 7485

⇒ 7485 = 1485 + P

⇒ P = 6000

Using SI formula for 1 year

⇒ Rate% = (495 × 100)/6000 = 8.25%

⇒ 2 × Rate% = 16.5%

Amount for 7 years = SI + P (for 7 yr)

⇒ Amount = [(6000 × 16.5 × 7)/100] + 6000

⇒ Amount = 12930

∴ The correct answer is Option 1).

Shortcut Trick

Ratio of Cost Price (CP) to Selling Price (SP) = 350 : 500 = 7 : 10

Profit units = 10 − 7 = 3 units

Gain % = (Profit ÷ CP) × 100 = (3 ÷ 7) × 100

Gain % = 42.857... ≈ 42.86%

∴ The correct answer is 42.86%.

Alternate Method

Given:

Cost Price (CP) of the article = ₹350

Selling Price (SP) of the article = ₹500

Formula Used:

Gain = Selling Price − Cost Price

Gain % = (Gain ÷ Cost Price) × 100

⇒ Gain = 500 − 350 = ₹150

⇒ Gain % = (150 ÷ 350) × 100

⇒ Gain % = (15 ÷ 35) × 100

⇒ Gain % = (3 ÷ 7) × 100

⇒ Gain % = 300 ÷ 7 = 42.8571...

⇒ Gain % ≈ 42.86%

∴ The correct answer is 42.86%.

Additional Information

Loss Percentage

When Cost Price is greater than Selling Price, a loss occurs. Loss % = [(CP − SP) ÷ CP] × 100.

Marked Price and Discount

The price listed on an item is the Marked Price (MP). Discount is always calculated on the MP, while Profit/Loss is calculated on the CP.

Relationship with SP

Selling Price can also be calculated as: SP = [CP × (100 + Gain %)] ÷ 100 or [CP × (100 − Loss %)] ÷ 100.

Given:

A, B, C, and D birds complete one round in 27 minutes, 30 minutes, 45 minutes, and 60 minutes, respectively.

Concept used:

LCM is the smallest common multiple of two or more numbers.

Calculation:

LCM (27, 30, 45, 60) = 540

Now, they will meet again at the starting position after 540 minutes.

⇒ 540 minutes = 540/60 = 9 hours

∴ They will meet again at the starting position after 9 hours.

Given:

12 persons dig a trench of 20 m in 8 days.

Concept used:

Total work = Number of workers × Efficiency of each worker × Number of days required

Calculation:

Let, the efficiency of each person be M.

According to the question,

Initial total work = 20

New total work = 30

⇒ 20 = 12 × M × 8

⇒ M = 5/24

Now, the number of persons required = 30 ÷ (5/24 × 6) = 24

∴ The number of persons required to dig a 30 m trench of the same width and depth in 6 days is 24.

Shortcut Trick

For any square inscribed in a circle, the diagonal of the square is equal to the diameter of that circle.

Given Diagonal (d) = 16 cm.

Area of Square = (Diagonal)² ÷ 2

Area = 16² ÷ 2 = 256 ÷ 2 = 128 cm².

∴ The correct answer is 128 cm².

Alternate Method

Given: A square is inscribed in a circle with a diagonal (diameter) of 16 cm.

⇒ Let the side of the inscribed square be 'a'.

⇒ The diagonal (d) of a square is related to its side by: d = a × √2

⇒ 16 = a × √2

⇒ a = 16 ÷ √2

⇒ Area of the square = a²

⇒ Area = (16 ÷ √2)²

⇒ Area = 256 ÷ 2

⇒ Area = 128 cm²

∴ The correct answer is 128 cm².

Additional Information

Square Inscribed in Circle

When a square is inscribed in a circle, the diameter of the circle is equal to the diagonal of the square. (Diameter = a√2)

Circle Inscribed in Square

When a circle is inscribed in a square, the diameter of the circle is equal to the side of the square. (Diameter = a)

Key Formulas

Area of a square = (side)² = (diagonal)² ÷ 2. Diagonal of a square = side × √2.

Given:

Average age of boys = 16 years

Average age of girls = 13 years

Ratio of the number of boys and girls = 2 : 3.

Concept used:

Total = Average × Number of entities

Calculation:

Let, there be 2k and 3k boys and girls respectively.

Total age of all boys = 16 × 2k = 32k years

Total age of all girls = 13 × 3k = 39k years

Now, the average age of all participants 

⇒ (39 + 32)k ÷ (2k + 3k)

⇒ 14.2 years

∴ The average age of all participants is 14.2 years.

Given:

Ramesh invested = 130% × Suresh invested

Suresh invested = 60% ×  Arun invested

Arun invested = Rs. 8,000

Calculation:

Suresh invested = 60% × 8000

⇒ Rs. 4800

Ramesh invested = 130% × 4800

⇒ Rs. 6240

Now, Difference in the investments by Ramesh and Suresh

⇒ 6240 - 4800 =Rs. 1440  

∴ The difference in the amounts invested by Ramesh and Suresh is Rs. 1440.

Concept used:

Calculation:

[(102 – 16 ÷ 8) – 2] ÷ [3 + 6 × (5 + 4) ÷ 3 – 7]

⇒ [(102 – 2) – 2] ÷ [3 + 6 × 9 ÷ 3 – 7] 

⇒ [100 – 2] ÷ [3 + 6 × 3 – 7] 

⇒ 98 ÷ [3 + 18 – 7] 

⇒ 98 ÷ 14

⇒ 7

∴ The required answer is 7.

Given:

The loss incurred in a transaction is $\frac{1}{5}$ of the selling price.

Concept used:

Cost price = Selling price + Loss

Loss% = ${(Cost\ Price\ -\ Selling\ Price) \over Cost\ Price} \times 100\%$

Calculation:

Let the selling price be Rs. 100.

Loss = 100/5 = Rs. 20

Cost price = 100 + 20 = Rs. 120

Now, loss% = ${{20 \over 120} \times 100\%}$

⇒ 16.67%

∴ The loss percentage will be closest to 16.67%.

Concept used:

Calculation:

$\frac{{21, + ,\left( { - 18} \right),, \times ,2 - ,\left[ { - 4, + ,15{ 5, \div ,\left( {4, - ,7} \right)} , \div ,,4\left( { - 5} \right)} \right]}}{{\left( { - 14} \right), \times ,\left( 2 \right), + ,7}}$

⇒ $\frac{{21, + ,\left( { - 18} \right),, \times ,2 - ,\left[ { - 4, + ,15{ 5, \div ,\left( -3\right)} , \div ,,\left( { - 20} \right)} \right]}}{{-28 + 7}}$

⇒ $\frac{{21, + ,\left( { - 18} \right),, \times ,2 - ,\left[ { - 4, + ,15{ 5, \div ,\left( -3\right)} , \div ,,\left( { - 20} \right)} \right]}} {-21}$

⇒ ${21 + (-18) \times 2 - [-4 + 15 \times -{5 \over 3} \div -20]} \over {-21}$

⇒ ${21 + (-18) \times 2 - [-4 + {(-25)} \div (-20)]} \over {-21}$

⇒ ${21 + (-18) \times 2 - [-4 + {5 \over 4}]} \over {-21}$

⇒ ${21 + (-18) \times 2 - {-11 \over 4}} \over {-21}$

⇒ ${21 + (-36) - {-11 \over 4}} \over {-21}$

⇒ ${21 -36 + {11 \over 4}} \over {-21}$

⇒ ${{-49 \over 4}} \over {-21}$

⇒ $\frac{7} {12}$

∴ The simplified value is $\frac{7} {12}$.

Given:

A sum of ₹ 159250 is divided among A, B, C, and D such that the ratio of the shares of A and B is 1 : 3, that of B and C is 2 : 5, and that of C and D is 2 : 3. 

Calculation:

A : B = 1 : 3 = 2 : 6

B : C = 2 : 5 = 6 : 15

C : D = 2 : 3 = 15 : 22.5

So,

A : B : C : D

⇒ 2 : 6 : 15 : 22.5

⇒ 20 : 60 : 150 : 225

⇒ 4 : 12 : 30 : 45

Now, A's share = 159250 × 4/(4 + 12 + 30 + 45)

⇒ 159250 × 4/91 = ₹7000

∴ The share of A is ₹7000 .

Given:

10 women can complete a work in 15 days. The same work can be completed in 5 days by 15 men. 

10 women started the work and after 3 days, 5 men replaced 5 women.

Concept used:

Total work = Number of workers × Efficiency of each worker × Days to complete the work

Calculation:

Let the total work be 150 units.

Efficiency of each woman = 150 ÷ (10 × 15) = 1 units

Efficiency of each man = 150 ÷ (15 × 5) = 2 units

Work done in 3 days = 10 × 1 × 3 = 30 units

Remaining work = 150 - 30 = 120 units

5 women and 5 men together complete in 1 day = 5 × 2 + 5 × 1 = 15 units

So, the remaining work will be done in = 120/15 = 8 days

Now, the work will be completed = 8 + 3 = 11 days

∴ The work will be completed in 11 days.

Given:

In an examination, a student requires 35% marks to pass.

Sunita gets 145 marks and fails by 23 marks.

Calculation:

Passing marks = 145 + 23 = 168

35% of the total marks = 168

Now, the maximum total marks = 168/35%

⇒ 168/0.35 = 480

∴ The maximum marks of the examination is 480.

The correct answer is option 4) i.e. "A complicated situation or problem."

 

Key Points   

• Let’s look at the meaning of the given idiom/ phrase:
• The phrase 'A can of worms' means 'to create a complicated situation in which doing something to correct a problem leads to many more problems.'
• Example:
• ​The government is reluctant to change the old policy now because it doesn't want to open a can of worms.
• Hence, the only possible answer is option 4 'A complicated situation or problem,' which exactly resembles the meaning of the given idiom/ phrase.

 

Correct meaning: A complicated situation or problem.

The correct answer is option 4) i.e., 'Catastrophe.'

 

Key Points

  

• Let's look at the meaning of the marked option:

• Example:
• A violent cyclone preceded the catastrophe, by which many coastal villages were destroyed.
• ​Let's look at the meanings of the other given options:

• Hence, from the given meanings, we find that 'Catastrophe' is the correct one-word substitute.
• So, the correct answer is option 4.

 

Correct one-word substitute: Catastrophe.