UPSC Prelims 2011 Question Paper & Solutions

UPSC Prelims 2011 solved question paper — GS Paper 1 and CSAT with full explanations, subject-wise breakdown, and the official cutoff.

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UPSC Prelims 2011 solved paper

Every question from the official paper with the correct answer and a full explanation. Click any row to open the detailed solution.

General Studies — Paper 1

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QQuestionSubjectAnswerSolution
1In the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the im…economyBView
2Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: 1. The orbit…science-and-technologyAView
3India has experienced persistent and high food inflation in the recent past. What could be the reasons? 1. Due to a gradual switchover to th…economyBView
4At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledg…science-and-technologyCView
5In terms of economy, the visit by foreign nationals to witness the XIX Common Wealth Games in India amounted toeconomyAView
6Microbial fuel cells are considered a source of sustainable energy. Why? 1. They use living organisms as catalysts to generate electricity f…science-and-technologyCView
7Which one of the following statements appropriately describes the "fiscal stimulus"?economyBView
8The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?geographyBView
9Consider the following actions which the Government can take: 1. Devaluing the domestic currency. 2. Reduction in the export subsidy. 3. Ado…economyDView
10The Constitution (Seventy-Third Amendment) Act, 1992, which aims at promoting the Panchayati Raj Institutions in the country, provides for w…polity-and-governanceDView
11Two important rivers -- one with its source in Jharkhand (and known by a different name in Odisha), and another with its source in Odisha --…geographyAView
12A rapid increase in the rate of inflation is sometimes attributed to the “base effect”. What is “base effect”?economyCView
13India is regarded as a country with “Demographic Dividend”. This is due toeconomyBView
14Regarding “carbon credits”, which one of the following statements is not correct?geographyDView
15Which one of the following is not a feature of “Value Added Tax”?economyDView
16A “closed economy” is an economy in whicheconomyDView
17When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies becausegeographyBView
18The "New START" treaty was in the news. What is this treaty?polity-and-governanceAView
19Three of the following criteria have contributed to the recognition of Western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodive…geographyCView
20Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not re…geographyBView
21In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the 1. d…geographyBView
22If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is becausegeographyAView
23The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?geographyBView
24With reference to India, consider the following Central Acts: 1. Import and Export (Control) Act, 1947 2. Mining and Mineral Development (Re…geographyCView
25Karl Marx explained the process of class struggle with the help of which one of the following theories?polity-and-governanceDView
26A layer in the Earth's atmosphere called Ionosphere facilitates radio communication. Why? 1. The presence of ozone causes the reflection of …geographyDView
27Both Foreign Direct Investment (FDI) and Foreign Institutional Investor (FII) are related to investment in a country. Which one of the follo…economyBView
28A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this isscience-and-technologyAView
29With reference to 'Aam Admi Bima Yojana', consider the following statements: 1. The member insured under the scheme must be the head of the …polity-and-governanceCView
30In the context of global oil prices, “Brent crude oil” is frequently referred to in the news. What does this term imply? 1. It is a major cl…economyBView
31The function of heavy water in a nuclear reactor is toscience-and-technologyAView
32In India, if a religious sect/community is given the status of a national minority, what special advantages it is entitled to? 1. It can est…polity-and-governanceCView
33India is home to lakhs of persons with disabilities. What are the benefits available to them under the law? 1. Free schooling till the age o…polity-and-governanceDView
34With what purpose is the Government of India promoting the concept of “Mega Food Parks”? 1. To provide good infrastructure facilities for th…economyBView
35The authorization for the withdrawal of funds from the Consolidated Fund of India must come fromBView
36All revenues received by the Union Government by way of taxes and other receipts for the conduct of Government business are credited to theCView
37Microfinance is the provision of financial services to people of low-income groups. This includes both the consumers and the self-employed. …economyDView
38Southeast Asia has captivated the attention of global community over space and time as a geostrategically significant region. Which among th…geographyDView
39A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers? 1. …economyCView
40Among the following who are eligible to benefit from the “Mahatma Gandhi National Rural Employment Guarantee Act”?polity-and-governanceDView
41With reference to “Look East Policy” of India, consider the following statements: 1. India wants to establish itself as an important regiona…polity-and-governanceBView
42When the annual Union Budget is not passed by the Lok Sabha,DView
43Under the Constitution of India, which one of the following is not a fundamental duty?polity-and-governanceAView
44With reference to the Finance Commission of India, which of the following statements is correct?polity-and-governanceDView
45Consider the following: 1. Right to education. 2. Right to equal access to public service. 3. Right to food. Which of the above is/are Human…polity-and-governanceDView
46There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenome…geographyDView
47Consider the following: 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which of the above add carbon dioxide…geographyCView
48Recently, the USA decided to support India's membership in multi-lateral export control regimes called the "Australia Group" and the "Wassen…polity-and-governanceDView
49The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?geographyCView
50A sandy and saline area is the natural habitat of an Indian animal species. The animal has no predators in that area but its existence is th…geographyBView
51La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 1. La Nina is characterised by unusua…geographyDView
52The tendency for increased litigation was visible after the introduction of the land settlement system of Lord Cornwallis in 1793. The reaso…historyDView
53Which one of the following observations is not true about the Quit India Movement of 1942?historyAView
54Which amongst the following provided a common factor for tribal insurrection in India in the 19th century?historyDView
55India maintained its early cultural contacts and trade links with Southeast Asia across the Bay of Bengal. For this pre-eminence of early ma…geographyCView
56What is the difference between Bluetooth and Wi-Fi devices?science-and-technologyAView
57With reference to micro-irrigation, which of the following statements is/are correct? 1. Fertilizer/nutrient loss can be reduced. 2. It is t…geographyCView
58With reference to the period of colonial rule in India, “Home Charges” formed an important part of drain of wealth from India. Which of the …historyBView
59What was the reason for Mahatma Gandhi to organize a satyagraha on behalf of the peasants of Kheda? 1. The Administration did not suspend th…historyAView
60Biodiversity forms the basis for human existence in the following ways: 1. Soil formation 2. Prevention of soil erosion 3. Recycling of wast…geographyDView
61Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is…science-and-technologyDView
62What was the purpose with which Sir William Wedderburn and W. S. Caine had set up the Indian Parliamentary Committee in 1893?historyAView
63What is the difference between a CFL and an LED lamp? 1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses sem…science-and-technologyCView
64Recently, “oilzapper” was in the news. What is it?science-and-technologyAView
65A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O ne…science-and-technologyAView
66Mahatma Gandhi said that some of his deepest convictions were reflected in a book titled, “Unto this Last” and the book transformed his life…historyBView
67With reference to Indian freedom struggle, Usha Mehta is well-known forhistoryAView
68A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? 1. DVD s…science-and-technologyBView
69With reference to the period of Indian freedom struggle, which of the following was/were recommended by the Nehru report? 1. Complete Indepe…historyBView
70Among the following States, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minim…geographyBView
71Which one of the following is not a site for in-situ method of conservation of flora?geographyBView
72Consider the following statements: In India, a Metropolitan Planning Committee 1. is constituted under the provisions of the Constitution of…polity-and-governanceAView
73What is the difference between "vote-on-account" and "interim budget"? 1. The provision of a "vote-on-account" is used by a regular Governme…BView
74Regarding the International Monetary Fund, which one of the following statements is correct?economyCView
75The 2004 Tsunami made people realize that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves functi…geographyDView
76The Jain philosophy holds that the world is created and maintained byart-and-cultureAView
77Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of…geographyBView
78The “Red Data Books” published by the International Union for Conservation of Nature and Natural Resources (IUCN) contain lists of 1. Endemi…geographyBView
79Why is the offering of "teaser loans" by commercial banks a cause of economic concern? 1. The teaser loans are considered to be an aspect of…economyAView
80An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earthscience-and-technologyDView
81In the context of Indian economy, consider the following statements: 1. The growth rate of GDP has steadily increased in the last five years…economyDView
82In India, which of the following have the highest share in the disbursement of credit to agriculture and allied activities?economyAView
83Which of the following can aid in furthering the Government’s objective of inclusive growth? 1. Promoting Self-Help Groups 2. Promoting Micr…economyDView
84Why is the Government of India disinvesting its equity in the Central Public Sector Enterprises (CPSEs)? 1. The Government intends to use th…economyDView
85What is the difference between asteroids and comets? 1. Asteroids are small rocky planets, while comets are formed of frozen gases held toge…geographyBView
86Economic growth is usually coupled witheconomyBView
87The lowering of Bank Rate by the Reserve Bank of India leads toeconomyAView
88Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere. Why? 1. Southern hemisphere has less landmass as …geographyAView
89Between India and East Asia, the navigation-time and distance can be greatly reduced by which of the following? 1. Deepening the Malacca str…geographyBView
90Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants h…science-and-technologyCView
91Regarding the Indus Valley Civilization, consider the following statements: 1. It was predominantly a secular civilization and the religious…historyCView
92The lower Gangetic plain is characterised by humid climate with high temperature throughout the year. Which one among the following pairs of…geographyCView
93What could be the main reason/reasons for the formation of African and Eurasian desert belt? 1. It is located in the sub-tropical high press…geographyAView
94The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? 1. There are no clouds …geographyCView
95Consider the following statements: 1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes. 2. Along …geographyCView
96The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches. …geographyBView
97A state in India has the following characteristics: 1. Its northern part is arid and semi-arid. 2. Its central part produces cotton. 3. Cult…geographyBView
98What is “Virtual Private Network”?science-and-technologyBView
99The “dharma” and “rita” depict a central idea of ancient Vedic civilization of India. In this context, consider the following statements: 1.…historyCView

CSAT — Paper 2 (qualifying)

65 / 65
QQuestionSubjectAnswerSolution
1Read each of the following two passages and answer the items that follow. Your answers to these items should be based on the passages only. …Reading ComprehensionAView
2Passage-I For achieving inclusive growth there is- a critical need to rethink the- role of the State. The early debate among economists abou…Reading ComprehensionDView
3Passage-I For achieving inclusive growth there is- a critical need to rethink the- role of the State. The early debate among economists abou…Reading ComprehensionCView
4Passage- I For achieving inclusive growth there is- a critical need to rethink the- role of the State. The early debate among economists abo…Reading ComprehensionDView
5Passage-I For achieving inclusive growth there is- a critical need to rethink the- role of the State. The early debate among economists abou…Reading ComprehensionDView
6Passage-2 The concept of 'creative society' refers to a phase of development of a society in which a large number of potential contradiction…Reading ComprehensionCView
7Passage-2 The concept of 'creative society' refers to a phase of development of a society in which a large number of potential contradiction…Reading ComprehensionCView
8Passage-2 The concept of 'creative society' refers to a phase of development of a society in which a large number of potential contradiction…Reading ComprehensionDView
9Consider the following three statements: 1. Only students can participate in the race. 2. Some participants in the race are girls. 3. All gi…Logical ReasoningCView
10Each of the following two items consists of four statements. Of these four statements, two cannot both be true, but both can be false. Study…Logical ReasoningAView
11The following items consists of four statements. Of these four statements, two cannot both be true, but both can be false. Study the stateme…Logical ReasoningCView
12Read each of the following two passages and answer the items that follow. Your answers to these items should be based on the passages only. …Reading ComprehensionCView
13Passage-1 Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, p…Reading ComprehensionAView
14Passage-1 Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, p…Reading ComprehensionBView
15Passage-B: A moral act must be our own act; must spring from our own will. If we act mechanically, these is no moral content in our act. Suc…Reading ComprehensionDView
16Passage-B: A moral act must be our own act; must spring from our own will. If we act mechanically, these is no moral content in our act. Suc…Reading ComprehensionBView
17Passage- B: A moral act must be our own act; must spring from our own will. If we act mechanically, these is no moral content in our act. Su…Reading ComprehensionAView
18Read the following passage and answer the items that follow. Your answers to these items should be based on the passage only. Passage A coun…Reading ComprehensionBView
19Passage A country under foreign domination seeks escape from the present in dreams of a vanished age, and finds consolation in visions of pa…Reading ComprehensionAView
20Passage A country under foreign domination seeks escape from the present in dreams of a vanished age, and finds consolation in visions of pa…Reading ComprehensionAView
21Passage A country under foreign domination seeks escape from the present in dreams of a vanished age, and finds consolation in visions of pa…Reading ComprehensionCView
22There are four routes to travel from city A to city B and six routes from city B to city C. How many routes are possible to travel from the …Quantitative AptitudeAView
23A contract on construction job specifies a penalty for delay in completion of the work beyond a certain date is as follows: Rs. 200 for the …Quantitative AptitudeBView
24A person has only Rs. 1 and Rs. 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is Rs. 75…Quantitative AptitudeDView
25Three persons start walking together and their steps measure 40 cm, 42 cm and 45 cm respectively. What is the minimum distance each should w…Quantitative AptitudeAView
26If a bus travels 160 km in 4 hours and a train travels 320 km in 5 hours at uniform speeds, then what is the ratio of the distances travelle…Quantitative AptitudeBView
27There are 100 students in a particular class. 60% students play cricket, 30% student play football and 10% student play both the games. What…Quantitative AptitudeBView
28A village having a population of 4000 requires 150 liters of water per head per day. It has a tank measuring 20 m × 15 m × 6 m . The water o…Quantitative AptitudeBView
29Passage A species that exerts. an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone sp…Reading ComprehensionCView
30Passage A species that exerts. an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone sp…Reading ComprehensionDView
31Passage A species that exerts. an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone sp…Reading ComprehensionDView
32Passage A species that exerts. an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone sp…Reading ComprehensionAView
33Consider the following argument: "In, order to be a teacher one must graduate from college. All poets are poor. Some Mathematicians are poet…Logical ReasoningBView
34A student on her first 3 tests receives on an average score of N points. If she exceeds her previous average score by 20 points on her fourt…Quantitative AptitudeDView
35In a group of persons, 70% of the persons are male and 30% of the persons are married. If two sevenths of males are married, what fraction o…Quantitative AptitudeDView
36The houses of A and B face each other on a road going north-south, A's being on the western side. A comes out of his house, turns left, trav…Logical ReasoningCView
37Passage Now India's children have a right to receive at least eight years of education, the gnawing question is whether it will remain 'on p…Reading ComprehensionDView
38Passage Now India's children have a right to receive at least eight years of education, the gnawing question is whether it will remain 'on p…Reading ComprehensionBView
39Passage Now India's children have a right to receive at least eight years of education, the gnawing question is whether it will remain 'on p…Reading ComprehensionDView
40Passage Now India's children have a right to receive at least eight years of education, the gnawing question is whether it will remain 'on p…Reading ComprehensionCView
41Passage Now India's children have a right to receive at least eight years of education, the gnawing question is whether' it will remain 'on …Reading ComprehensionDView
42Read the following passage and answer that follow: A, B, C, D and E are members of the same family. There are two fathers, two sons, two wiv…Logical ReasoningAView
43Read the following passage and answer that follow: A, B, C, D and E are members of the same family. There are two fathers, two sons, two wiv…Logical ReasoningCView
44Read the following passage and answer that follow: A, B, C, D and E are members of the same family. There are two fathers, two sons, two wiv…Logical ReasoningDView
45In a survey regarding a proposal measure to be introduced, 2878 person took part of which 1652 were males. 1226 persons voted against the pr…Quantitative AptitudeBView
46In a survey regarding a proposal measure to be introduced, 2878 person took part of which 1652 were males. 1226 persons voted against the pr…Quantitative AptitudeAView
47In a survey regarding a proposal measure to be introduced, 2878 person took part of which 1652 were males. 1226 persons voted against the pr…Quantitative AptitudeAView
48In a queue, Mr. X is fourteenth from the front and Mr. Y is seventeenth from the end, while Mr. Z is exactly in between Mr. X and Mr. Y. If …Logical ReasoningCView
49Passage- I He walked several miles that day but could not get anything to eat or drink except some dry bread and some water, which he got fr…Reading ComprehensionBView
50Passage- I He walked several miles that day but could not get anything to eat or drink except some dry bread and some water, which he got fr…Reading ComprehensionAView
51Passage- I He walked several miles that day but could not get anything to eat or drink except some dry bread and some water, which he got fr…Reading ComprehensionAView
52Passage - II I opened the bag and packed the boots in; and then, just as I was going to close it, a horrible idea occurred to me - Had I pac…Reading ComprehensionAView
53Passage - II I opened the bag and packed the boots in; and then, just as I was going to close it, a horrible idea occurred to me - Had I pac…Reading ComprehensionBView
54Passage - II opened the bag and packed the boots in; and then, just as I was going to close it, a horrible idea occurred to me - Had I packe…Reading ComprehensionCView
55Passage- Ill In spring, polar bear mothers emerge from dens with three month old cubs. The mother bear has fasted for as long as eight month…Reading ComprehensionDView
56Passage- Ill In spring, polar bear mothers emerge from dens with three month old cubs. The mother bear has fasted for as long as eight month…Reading ComprehensionBView
57Passage- Ill In spring, polar bear mothers emerge from dens with three month old cubs. The mother bear has fasted for as long as eight month…Reading ComprehensionDView
58Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingAView
59Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingBView
60Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingCView
61Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingAView
62Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingBView
63Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingCView
64Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingBView
65Each item describes a situation and is followed by four possible responses. Indicate the response you find most appropriate. Choose only one…Decision MakingAView

Subject-wise weightage

How GS Paper 1 distributed marks across History, Polity, Geography, Economy, Science & Tech, Environment and Current Affairs.

  • geography34 (34%)
  • economy22 (22%)
  • science-and-technology14 (14%)
  • polity-and-governance13 (13%)
  • history11 (11%)
  • Others4 (4%)
  • art-and-culture1 (1%)

Frequently asked questions

Where can I download the UPSC Prelims 2011 question paper?
Every question from the official UPSC Prelims 2011 GS Paper 1 and CSAT paper is reproduced above with the correct answer and a detailed explanation. UPSC also hosts scanned PDFs of all four sets on upsc.gov.in under the "Examinations" section.
How is the UPSC Prelims 2011 paper scored?
GS Paper 1 had 100 questions worth 2 marks each (200 total) with 0.66 negative marking. CSAT had 80 questions worth 2.5 marks each (200 total) with 0.83 negative marking. Only GS Paper 1 marks count towards the cutoff; CSAT had to be cleared at 33%.
Are Set A, B, C and D papers different?
No. UPSC distributes four shuffled versions with identical content but different question orders. Our archive shows the canonical order — the questions are the same regardless of which set you wrote.
Can I use the UPSC Prelims 2011 paper for current practice?
Yes. PYQ revision is one of the highest-yield activities for current aspirants. UPSC reuses themes and concepts every few years, so working through 2011 questions sharpens both content recall and the elimination strategy that UPSC's MCQ format rewards.
Were any answers in the UPSC official key for that year challenged?
UPSC accepts written objections to its provisional answer key during a fixed window each year. A small number of questions across most years are dropped or have answers changed in the final key — the version shown above reflects UPSC's final accepted answers.
Is CSAT counted in the Prelims cutoff?
No. CSAT (Paper 2) is qualifying only — you must score 33% (66 of 200 marks) to qualify, but the merit cutoff is decided entirely by GS Paper 1 marks.
How do I practice UPSC Prelims 2011 questions in test mode?
Click any row in the answer key to open the full-solution page. Each question carries subject and topic tags so you can build subject-wise revision sets, and the test generator (linked from the header) can compose a timed mock from any year or subject.