UPSC Prelims 2015 Question Paper & Solutions

UPSC Prelims 2015 solved question paper — GS Paper 1 and CSAT with full explanations, subject-wise breakdown, and the official cutoff.

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UPSC Prelims 2015 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

100 / 100
QQuestionSubjectAnswerSolution
1'Pradhan Mantri Jan-Dhan Yojana' has been launched foreconomyCView
2With reference to the Fourteenth Finance Commission, which of the following statements is/are correct? 1. It has increased the share of Stat…polity-and-governanceAView
3The 'Fortaleza Declaration', recently in the news, is related to the affairs ofpolity-and-governanceBView
4A decrease in tax to GDP ratio of a country indicates which of the following? 1. Slowing economic growth rate 2. Less equitable distribution…economyAView
5In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?geographyBView
6Which one of the following pairs of States of India indicates the easternmost and westernmost State?geographyDView
7Consider the following statements regarding the Directive Principles of State Policy: 1. The Principles spell out the socio-economic democra…polity-and-governanceCView
8In the 'Index of Eight Core Industries', which one of the following is given the highest weight?economyBView
9Which of the following National Parks is unique in being a swamp with floating vegetation that supports a rich biodiversity?geographyBView
10Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)? 1. NIF is an autonomous body of the D…science-and-technologyAView
11What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? 1. Proliferation of nitrogen-fixing microor…geographyCView
12With reference to the International Union for Conservation of Nature and Natural Resources (IUCN) and the Convention on International Trade …geographyBView
13The Fair and Remunerative Price (FRP) of sugarcane is approved by theeconomyAView
14What explains the eastward flow of the equatorial counter-current?geographyBView
15Consider the following pairs: Place of Pilgrimage Location 1. Srisailam : Nallamala Hills 2. Omkareshwar : Satmala Hills 3. Pushkar : Mahade…art-and-cultureAView
16With reference to Rowlatt Satyagraha, which of the following statements is/are correct? 1. The Rowlatt Act was based on the recommendations …historyBView
17Among the following, which were frequently mentioned in the news for the outbreak of Ebola virus recently?geographyBView
18With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash ca…geographyAView
19With reference to 'dugong', a mammal found in India, which of the following statements is/are correct? 1. It is a herbivorous marine animal.…geographyCView
20Who of the following was/were economic critic/critics of colonialism in India? 1. Dadabhai Naoroji 2. G. Subramania Iyer 3. R. C. Dutt Selec…economyDView
21Which one of the following issues the 'Global Economic Prospects' report periodically?economyDView
22When the Reserve Bank of India reduces the Statutory Liquidity Ratio by 50 basis points, which of the following is likely to happen?economyCView
23With reference to the use of nano-technology in health sector, which of the following statements is/are correct? 1. Targeted drug delivery i…science-and-technologyCView
24In India, markets in agricultural products are regulated under theeconomyBView
25Which one of the following is the national aquatic animal of India?CView
26With reference to Congress Socialist Party, consider the following statements: 1. It advocated the boycott of British goods and evasion of t…historyDView
27Consider the following statements: 1. The Rajya Sabha has no power either to reject or to amend a Money Bill. 2. The Rajya Sabha cannot vote…polity-and-governanceBView
28The Government of India Act of 1919 clearly definedhistoryBView
29Which of the following brings out the 'Consumer Price Index Number for Industrial Workers?economyCView
30In the context of modern scientific research, consider the following statements about 'IceCube', a particle detector located at South Pole, …science-and-technologyDView
31The terms 'Agreement on Agriculture', 'Agreement on the Application of Sanitary and Phytosanitary Measures' and 'Peace Clause' appear in the…economyCView
32With reference to 'Near Field Communication (NFC) Technology', which of the following statements is/are correct? 1. It is a contactless comm…science-and-technologyCView
33The area known as 'Golan Heights' sometimes appears in the news in the context of the events related togeographyBView
34Convertibility of rupee implieseconomyCView
35Consider the following pairs: Medieval Indian State Present Region 1. Champaka : Central India 2. Durgara : Jammu 3. Kuluta : Malabar Which …historyBView
36Consider the following rivers: 1. Vamsadhara 2. Indravati 3. Pranahita 4. Pennar Which of the above are tributaries of Godavari?geographyDView
37When a bill is referred to a joint sitting of both the Houses of the Parliament, it has to be passed bypolity-and-governanceAView
38Which one of the following regions of India has a combination of mangrove forest, evergreen forest and deciduous forest?geographyDView
39Which of the following kingdoms were associated with the life of the Buddha? 1. Avanti 2. Gandhara 3. Kosala 4. Magadha Select the correct a…historyDView
40Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?geographyBView
41Consider the following: The arrival of Babur into India led to the 1. introduction of gunpowder in the subcontinent 2. introduction of the a…historyBView
42The Government of India has established NITI Aayog to replace thepolity-and-governanceDView
43What is Rio+20 Conference, often mentioned in the news?geographyAView
44Consider the following statements : 1. The Executive Power of the Union of India is vested in the Prime Minister. 2. The Prime Minister is t…polity-and-governanceDView
45The term 'Goldilocks Zone' is often seen in the news in the context ofscience-and-technologyCView
46Who of the following organized a march on the Tanjore coast to break the Salt Law in April 1930?historyBView
47Who of the following founded a new city on the south bank of a tributary to river Krishna and undertook to rule his new kingdom as the agent…historyCView
48Consider the following statements: 1. The first woman President of the Indian National Congress was Sarojini Naidu. 2. The first Muslim Pres…historyBView
49Which of the following statements regarding 'Green Climate Fund' is/are correct? 1. It is intended to assist the developing countries in ada…geographyAView
50Indira Gandhi Prize for Peace, Disarma-ment and Development for 2014 was given to which one of the following?polity-and-governanceCView
51With reference to the Cabinet Mission, which of the following statements is/are correct? 1. It recommended a federal government. 2. It enlar…historyAView
52Which one of the following National Parks has a climate that varies from tropical to subtropical, temperate and arctic?geographyDView
53Amnesty International ispolity-and-governanceBView
54With reference to the art and archaeo-logical history of India, which one among the following was made earliest?art-and-cultureBView
55With reference to Indian history, which of the following is/are the essential element/elements of the feudal system? 1. A very strong centra…historyBView
56'BioCarbon Fund Initiative for Sustain-able Forest Landscapes' is managed by theeconomyDView
57India is a member of which among the following? 1. Asia-Pacific Economic Cooperation 2. Association of South-East Asian Nations 3. East Asia…polity-and-governanceBView
58In India, the steel production industry requires the import ofeconomyCView
59The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order topolity-and-governanceAView
60With reference to the Union Government, consider the following statements: 1. The Department of Revenue is responsible for the preparation o…CView
61Who/Which of the following is the custodian of the Constitution of India?polity-and-governanceDView
62Consider the following statements : 1. The Accelerated Irrigation Benefits Programme was launched during 1996-97 to provide loan assistance …economyBView
63The Genetic Engineering Appraisal Committee is constituted under thescience-and-technologyCView
64In the Mekong-Ganga Cooperation, an initiative of six countries, which of the following is/are not a participant/participants? 1. Bangladesh…polity-and-governanceCView
65'Basel III Accord' or simply 'Basel III', often seen in the news, seeks toeconomyBView
66Consider the following statements: 1. The winds which blow between 30° N and 60° S latitudes through-out the year are known as westerlies. 2…geographyBView
67With reference to Indian Ocean Rim Association for Regional Cooperation (IOR-ARC)', consider the following statements: 1. It was established…polity-and-governanceDView
68Which one of the following movements has contributed to a split in the Indian National Congress resulting in the emergence of 'moderates' an…historyAView
69In a particular region in India, the local people train the roots of living trees into robust bridges across the streams. As the time passes…geographyAView
70Tides occur in the oceans and seas due to which among the following? 1. Gravitational force of the Sun 2. Gravitational force of the Moon 3.…geographyDView
71In which of the following activities are Indian Remote Sensing (IRS) satellites used? 1. Assessment of crop productivity 2. Locating groundw…science-and-technologyAView
72Consider the following States: 1. Arunachal Pradesh 2. Himachal Pradesh 3. Mizoram In which of the above States do 'Tropical Wet Evergreen F…geographyCView
73The term 'IndARC', sometimes seen in the news, is the name ofscience-and-technologyDView
74With reference to 'Forest Carbon Partnership Facility', which of the following statements is/are correct? 1. It is a global partnership of g…geographyCView
75Which one of the following was given classical language status recently?art-and-cultureAView
76With reference to an organization known as 'BirdLife International', which of the following statements is/are correct? 1. It is a Global Par…geographyCView
77Which one of the following countries of South-West Asia does not open out to the Mediterranean Sea?geographyBView
78In India, in which one of the following types of forests is teak a dominant tree species?geographyAView
79'Beijing Declaration and Platform for Action', often seen in the news, ispolity-and-governanceCView
80"Each day is more or less the same, the morning is clear and bright with a sea breeze; as the Sun climbs high in the sky, heat mounts up, da…geographyBView
81With reference to Indian economy, consider the following statements : 1. The rate of growth of Real Gross Domestic Product has steadily incr…economyBView
82Consider the following statements: 1. The Legislative Council of a State in India can be larger in size than half of the Legislative Assembl…polity-and-governanceDView
83"To uphold and protect the Sovereignty, Unity and Integrity of India" is a provision made in thepolity-and-governanceDView
84Which one of the following is the best description of the term 'ecosystem?geographyCView
85The fundamental object of Panchayati Raj system is to ensure which among the following? 1. People's participation in development 2. Politica…polity-and-governanceCView
86With reference to Indian economy, consider the following: 1. Bank rate 2. Open market operations 3. Public debt 4. Public revenue Which of t…economyCView
87With reference to inflation in India, which of the following statements is correct?economyCView
88Consider the following countries: 1. China 2. France 3. India 4. Israel 5. Pakistan Which among the above are Nuclear Weapons States as reco…polity-and-governanceAView
89The ideal of 'Welfare State' in the Indian Constitution is enshrined in itspolity-and-governanceBView
90The substitution of steel for wooden ploughs in agricultural production is an example ofeconomyBView
91There is a Parliamentary System of Government in India because thepolity-and-governanceDView
92H1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases?science-and-technologyDView
93With reference to bio-toilets used by the Indian Railways, consider the following statements: 1. The decomposition of human waste in the bio…science-and-technologyDView
94The problem of international liquidity is related to the non-availability ofeconomyCView
95With reference to 'fuel cells' in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements: 1…science-and-technologyAView
96Kalamkari painting refers toart-and-cultureAView
97Which one of the following best describes the main objective of 'Seed Village. Concept?economyBView
98There has been a persistent deficit budget year after year. Which of the following actions can be taken by the government to reduce the defi…economyAView
99Which of the following has/have been accorded 'Geographical Indication' status? 1. Banaras Brocades and Sarees 2. Rajasthani Daal-Bati-Churm…economyCView
100With reference to the Indian Renewable Energy Development Agency Limited (IREDA), which of the following statements is/are correct? 1. It is…economyCView

CSAT — Paper 2 (qualifying)

75 / 75
QQuestionSubjectAnswerSolution
1Human history abounds in claims and theories confining the right of governing to a few select citizens. Exclusion of the many is justified o…Reading ComprehensionAView
2By 2050, the Earth's population will likely have swelled from seven to nine billion people. To fill all those stomachs while accounting for …Reading ComprehensionDView
3Many people in India feel that if we cut our defence expenditure on weapon- building, we can create a climate of peace with our neighbours, …Reading ComprehensionBView
4India accounts for nearly a fifth of the world's child deaths. In terms of numbers, it is the highest in the world - nearly 16 lakhs every y…Reading ComprehensionCView
5Foods travel more than the people who eat them. Grocery stores and supermarkets are loaded with preserved and processed foods. This, however…Reading ComprehensionCView
6I must say that, beyond occasionally exposing me to laughter, my constitutional shyness has been of no disadvantage whatever. In fact I can …Reading ComprehensionAView
7I must say that, beyond occasionally exposing me to laughter, my constitutional shyness has been of no disadvantage whatever. In fact I can …Reading ComprehensionAView
8I must say that, beyond occasionally exposing me to laughter, my constitutional shyness has been of no disadvantage whatever. In fact I can …Reading ComprehensionDView
9Twelve people form a club. By picking lots, one of them will host a dinner for all once in a month. The number of dinners a particular membe…Quantitative AptitudeDView
10Between 6 PM and 7 PM the minute hand of a clock will be ahead of the hour hand by 3 minutes atLogical ReasoningCView
11Consider the following matrix: 3 8 10 2 ? 1 6 56 90 2 20 0 What is the missing number at '?' in the matrix?Logical ReasoningAView
12What is the missing number 'X' of the series 7, X, 21, 31, 43?Logical ReasoningCView
13In a test, a candidate attempted only 8 questions and secured 50% marks in each of the questions. If he obtained a total of 40% in the test …Quantitative AptitudeBView
14A father is nine times as old as his son and the mother is eight times as old as the son. The sum of the father's and the mother's age is 51…Quantitative AptitudeDView
15Four persons A, B, C and D consisting of two married couples are in a group. Both the women are shorter than their respective husbands. A is…Logical ReasoningCView
16Consider the following statements : 1) A man had a wife, two sons and daughters in his family 2) The daughters were invited to a feast and t…Logical ReasoningBView
17Geeta: Naresh has become a better boxer since he started meditation. Radha: Impossible, A boxer's most important asset is his aggressiveness…Logical ReasoningAView
18All good athletes want to win and all athletes who want to win eat a well-balanced diet; therefore all athletes who do not eat a well- balan…Logical ReasoningBView
19The richer States have a responsibility to cut down carbon emissions and promote clean energy investments. These are the States that got ele…Reading ComprehensionAView
20Set against a rural backdrop, 'Stench of kerosene' is the story of a couple, Guleri and Manak, who have been happily married for several yea…Reading ComprehensionDView
21The ultimate aim of government is not to rule or control by fear, nor to demand obedience, but conversely, to free every man from fear, that…Reading ComprehensionAView
22Our municipal corporation are understaffed. The issue of skills and competencies of the staff poses an even greater challenge. Urban service…Reading ComprehensionBView
23Flamingos in large flock in the wild are social extremely loyal. They perform group mating dances. Parents are very fond of their chicks, ga…Reading ComprehensionCView
24Vast numbers of Indian citizens without bank accounts live in rural areas, are financially and functionally illiterate, and have little expe…Reading ComprehensionDView
25Individuals, groups and leaders who promote human development operate under strong institutional, structural and political constraints that …Reading ComprehensionCView
26Individuals, groups and leaders who promote human development operate under strong institutional, structural and political constraints that …Reading ComprehensionBView
27If A runs less fast than B, and B runs as fast but not faster than C; then, as compared to A, C runsLogical ReasoningBView
28Each of A, B, C and D has Rs 100. A pays Rs 20 to B, who pays Rs 10 to C, who gets Rs 30 from D. In this context, which one of the following…Quantitative AptitudeCView
29In a town, 45% population read magazine A, 55% read magazine B, 40% read magazine C, 30% read magazines A and B, 15% read magazines Band C, …Quantitative AptitudeCView
30Examine the following statements: 1) Lady's finger is tastier than cabbage. 2) Cauliflower is tastier than lady's finger. 3) Cabbage is not …Logical ReasoningDView
31Shahid and Rohit start from the same point in opposite directions. After each 1 km, Shahid always turns left and Rohit always turns right. W…Logical ReasoningBView
32In a 500 metres race, B starts 45 metres ahead of A, but A wins the race while B is still 35 metres behind. What is the ratio of the speeds …Quantitative AptitudeAView
33Two equal glasses of same type are respectively 1/3 and 1/4 full of milk. They are then filled up with water and the contents are mixed in a…Quantitative AptitudeAView
34Out of 130 students appearing in an examination, 62 failed in English, 52 failed in Mathematics, whereas 24 failed in both English and Mathe…Quantitative AptitudeAView
35In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can sp…Quantitative AptitudeCView
36In a parking area, the total number of wheels of all the cars (four- wheelers) and scooters/motorbikes (two-wheelers) is 100 more than twice…Quantitative AptitudeCView
37The mangroves can shed tons of leaves per acre every year; fungi and bacteria break down this leaf litter and consume it, they then are cons…Reading ComprehensionCView
38"By liberty I mean the eager maintenance of that atmosphere in which men have the opportunity to be their best selves." Which one of the fol…Reading ComprehensionDView
39Climate change is already making many people hungry all over the world, by disrupting crop yields and pushing up prices. And it is not just …Reading ComprehensionBView
40The Global Financial Stability Report finds that the share of portfolio investments from advanced economies in the total debt and equity inv…Reading ComprehensionDView
41Open defecation is disastrous when practised in very densely populated areas, where it is impossible to keep away human faeces from crops, w…Reading ComprehensionCView
42We generally talk about democracy but when it comes to any particular thing, we prefer a belonging to our caste or community or religion. So…Reading ComprehensionBView
43The existence/establishment of formal financial institutions that offer safe, reliable and alternative financial instruments is fundamental …Reading ComprehensionBView
44The existence/establishment of formal financial institutions that offer safe, reliable and alternative financial instruments is fundamental …Reading ComprehensionDView
45Governments may have to take steps which would otherwise be an infringement on the Fundamental Rights of individuals, such as acquiring a pe…Reading ComprehensionBView
46A selection is to be made for one post of Principal and two posts of Vice-Principal. Amongst the six candidates called for the interview, on…Quantitative AptitudeDView
47A student has to opt for 2 subjects out of 5 subjects for a course, namely, Commerce, Economics, Statistics, Mathematics I and Mathematics I…Quantitative AptitudeCView
48A person ordered 5 pairs of black socks and some pairs of brown socks. The price of a black pair was thrice that of a brown pair. While prep…Quantitative AptitudeDView
49The number of persons who read magazine X only is thrice the number of persons who read magazine Y. The number of persons who read magazine …Quantitative AptitudeDView
50Two pipes A and B can independently fill a tank completely in 20 and 30 minutes respectively. If both the pipes are opened simultaneously, h…Quantitative AptitudeBView
51Each of the six different faces of a cube has been coated with a different colour i.e., V, I, B, G, Y and O. Following information is given:…Logical ReasoningCView
52Consider the following statements: 1) Some claim to have seen UFOs (Unidentified Flying Objects). 2) Life on other heavenly bodies is consid…Logical ReasoningDView
53If ABC x DEED = ABCABC; where A, B, C, D and E are different digits, what are the values of D and E?Quantitative AptitudeCView
54Usha runs faster than Kamala, Priti runs slower than Swati, Swati runs slower than Kamala. Who is the slowest runner?Logical ReasoningBView
55India has suffered from persistent high inflation. Increase in administered prices, demand and supply imbalances, imported inflation aggrava…Reading ComprehensionDView
56No Right is absolute, exclusive or inviolable. The Right of personal property, similarly, has to be perceived in the larger context of its a…Reading ComprehensionDView
57The conflict between man and State is as old as State history. Although attempts have been made for centuries to bring about a proper adjust…Reading ComprehensionAView
58Climate change is a complex policy issue with major implications in terms of finance. All actions to address climate change ultimately invol…Reading ComprehensionCView
59Climate change is a complex policy issue with major implications in terms of finance. All actions to address climate change ultimately invol…Reading ComprehensionCView
60Climate change is a complex policy issue with major implications in terms of finance. All actions to address climate change ultimately invol…Reading ComprehensionAView
61Climate change is a complex policy issue with major implications in terms of finance. All actions to address climate change ultimately invol…Reading ComprehensionAView
62There are 5 tasks and 5 persons. Task-1 cannot be assigned to either person-1 or person-2. Task-2 must be assigned to either person-3 or per…Quantitative AptitudeCView
63The monthly incomes of Peter and Paul are in the ratio of 4:3. Their expenses are in the ratio of 3:2. If each saves Rs. 6,000 at the end of…Quantitative AptitudeAView
64Two cities A and B are 360 km apart. A car goes from A to B with a speed of 40 km/hr and returns to A with a speed of 60 km/hr. What is the …Quantitative AptitudeBView
65A, B, C, D, E and F are cousins. No two cousins are of the same age, but everyone's birthday falls on the same date of the same month. The y…Logical ReasoningBView
66A, B, C, D, E and F are cousins. No two cousins are of the same age, but everyone's birthday falls on the same date of the same month. The y…Logical ReasoningBView
67In a society it is customary for friends of the same sex to hug and for friends of opposite sex to shake hands when they meet. A group of fr…Quantitative AptitudeCView
68Two men, Anil and David, and two women, Shabnam and Rekha are in a sales group. Only two speak Tamil. The other two speak Marathi. Only one …Logical ReasoningDView
69In a plane, line X is perpendicular to line Y and parallel to line Z; line U is perpendicular to both lines V and W; line X is perpendicular…Logical ReasoningDView
70A cow costs more than 4 goats but less than 5 goats. If a goat costs between Rs. 600 and Rs. 800, which of the following is a most valid con…Quantitative AptitudeDView
71A society consists of only two types of people fighters and cowards. Two cowards are always friends. A fighter and a coward are always enemi…Logical ReasoningBView
72In a box of marbles, there are three less white marbles than the red ones and five more white marbles than the green ones. If there are a to…Quantitative AptitudeBView
73Candidates in a competitive examination consisted of 60% men and 40% women. 70% men and 75% women cleared the qualifying test and entered th…Quantitative AptitudeCView
74An automobiles owner reduced his monthly petrol consumption when the prices went up. The price-consumption relationship is as follows: Price…Quantitative AptitudeAView
75Consider the following statements followed by two conclusions: Statements: Some men are great. Some men are wise. Conclusion I: Men are eith…Logical ReasoningDView

Official cutoff — 2015

The cutoff UPSC announced for that year.

Official UPSC Prelims 2015 GS Paper 1 cutoff (out of 200). CSAT qualifying threshold remained 66/200.

General
107.34
EWS
OBC
SC
ST

Subject-wise weightage

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

  • geography26 (26%)
  • economy24 (24%)
  • polity-and-governance21 (21%)
  • history12 (12%)
  • science-and-technology11 (11%)
  • art-and-culture4 (4%)
  • Others2 (2%)

Frequently asked questions

Where can I download the UPSC Prelims 2015 question paper?
Every question from the official UPSC Prelims 2015 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.
What was the official cutoff for UPSC Prelims 2015?
The General category cutoff for UPSC Prelims 2015 was 107.34 marks out of 200 (GS Paper 1 only). The official cutoff strip above lists every category — EWS, OBC, SC, ST and PwBD subcategories.
How is the UPSC Prelims 2015 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 2015 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 2015 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 2015 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.