UPSC Prelims 2020 GS Paper I: answer key and question paper
The complete Series A answer key for the 2020 Civil Services Prelims General Studies Paper I, from UPSC's official final answer key, with the questions UPSC dropped, the subject-wise split and three questions explained in full.
Take the full 2020 paper under exam conditions. 100 questions, 2 hours, +2 / −0.66, exactly as UPSC set them. Then see your score, UPSC's key for every question and explanations for 10 of them, starting with your mistakes. Free with Google sign-in; Pro unlocks every explanation in English and தமிழ்.
Take the 2020 paperKey facts
| Exam | UPSC Civil Services (Preliminary) Examination 2020, General Studies Paper I |
| Date | 4 October 2020 |
| Question booklet | Series A, 100 questions, 2 hours |
| Marking | +2 for a correct answer, −0.66 for a wrong one, 0 if left blank |
| Answer key | UPSC's official final answer key, checked against the file on upsc.gov.in |
| Dropped questions | Q27, Q52 |
| Maximum marks | 196 |
Answer key, Series A
UPSC dropped 2 questions (Q27, Q52) from scoring, so the paper is marked out of 196. Other booklet series (B, C, D) have the same questions in a different order, so match your booklet to Series A before checking answers.
- 1b
- 2b
- 3d
- 4d
- 5b
- 6d
- 7d
- 8d
- 9a
- 10c
- 11b
- 12a
- 13d
- 14a
- 15d
- 16d
- 17d
- 18d
- 19d
- 20c
- 21b
- 22b
- 23a
- 24c
- 25c
- 26a
- 27Dropped
- 28a
- 29a
- 30a
- 31c
- 32b
- 33b
- 34d
- 35d
- 36c
- 37d
- 38b
- 39c
- 40d
- 41c
- 42d
- 43d
- 44d
- 45b
- 46a
- 47c
- 48a
- 49a
- 50d
- 51b
- 52Dropped
- 53a
- 54d
- 55b
- 56c
- 57b
- 58b
- 59b
- 60b
- 61c
- 62a
- 63d
- 64b
- 65a
- 66b
- 67a
- 68c
- 69d
- 70c
- 71b
- 72a
- 73c
- 74a
- 75a
- 76d
- 77a
- 78a
- 79d
- 80d
- 81a
- 82a
- 83d
- 84a
- 85a
- 86a
- 87a
- 88d
- 89c
- 90a
- 91c
- 92d
- 93b
- 94b
- 95c
- 96d
- 97a
- 98b
- 99c
- 100c
Subject-wise split
How the 100 questions divide across the syllabus, by 1way's classification of each question.
| Subject | Questions | Share |
|---|---|---|
| Economy | 22 | |
| Environment | 16 | |
| History | 15 | |
| Polity | 14 | |
| Science & Technology | 13 | |
| Geography | 11 | |
| Art & Culture | 4 | |
| Governance & Ethics | 3 | |
| International Relations | 2 |
Three questions from the 2020 paper, explained
Try each one before opening the answer. This is the kind of explanation you get after taking the paper: the reasoning behind every option, with sources.
Along with the Budget, the Finance Minister also places other documents before the Parliament which include ‘The Macro Economic Framework Statement’. The aforesaid document is presented because this is mandated by
- (a)Long standing parliamentary convention
- (b)Article 112 and Article 110(1) of the Constitution of India
- (c)Article 113 of the Constitution of India
- (d)Provisions of the Fiscal Responsibility and Budget Management Act, 2003
Show the answer and explanation
Answer: (d) Provisions of the Fiscal Responsibility and Budget Management Act, 2003
Section 3 of the Fiscal Responsibility and Budget Management (FRBM) Act, 2003 requires the Central Government to lay before both Houses of Parliament, along with the annual financial statement, the Macro-economic Framework Statement together with the fiscal policy statements (since the 2018 amendment, a single Medium-term Fiscal Policy cum Fiscal Policy Strategy Statement). The Macro-economic Framework Statement assesses growth prospects, the fiscal balance and the external sector. Article 112 requires only the annual financial statement (the Budget) and Article 110(1) defines a Money Bill; Article 113 deals with the procedure for estimates and demands for grants. Presentation of this document is a statutory requirement, not merely a long-standing convention. Hence (d).
With reference to Indian elephants, consider the following statements :
- 1.The leader of an elephant group is a female.
- 2.The maximum gestation period can be 22 months.
- 3.An elephant can normally go on calving till the age of 40 years only.
- 4.Among the States in India, the highest elephant population is in Kerala.
Which of the statements given above is/are correct ?
- (a)1 and 2 only
- (b)2 and 4 only
- (c)3 only
- (d)1, 3 and 4 only
Show the answer and explanation
Answer: (a) 1 and 2 only
Asian elephant herds are matriarchal: a family group of related females and their young is led by the oldest female, while adult males live alone or in loose bachelor groups, so statement 1 is correct. Elephants have the longest gestation of any land mammal, about 18 to 22 months, so a maximum of 22 months is correct (statement 2). Females can breed from their mid-teens until about 60 years of age, so calving is not limited to 40 years; statement 3 is incorrect. The 2017 synchronised elephant population estimation found the highest number in Karnataka (about 6,049), followed by Assam and Kerala, so statement 4 is incorrect. Hence 1 and 2 only. What changed since 2020: the DNA-based all-India estimation (SAIEE 2021-25) put India's wild elephants at about 22,446, with Karnataka still the highest at 6,013 (Wildlife Institute of India, SAIEE 2021-25 report, 2025).
Which of the following statements correctly explains the impact of Industrial Revolution on India during the first half of the nineteenth century ?
- (a)Indian handicrafts were ruined.
- (b)Machines were introduced in the Indian textile industry in large numbers.
- (c)Railway lines were laid in many parts of the country.
- (d)Heavy duties were imposed on the imports of British manufactures.
Show the answer and explanation
Answer: (a) Indian handicrafts were ruined.
The Industrial Revolution enabled Britain to produce cheap machine-made textiles and other goods on a large scale. After the Charter Act of 1813 ended the East India Company's trade monopoly, British manufactures entered India with only nominal duties, while Indian goods faced high duties in Britain; together with the loss of court patronage, this led to the decline of Indian handicrafts, often called deindustrialisation. Option (b) is incorrect: the first cotton mill came up in Bombay only in 1854, and machinery spread in the second half of the century. Option (c) is incorrect: the first railway line (Bombay to Thane) opened in 1853. Option (d) is the opposite of what happened, since British imports faced low duties. Hence (a).
The other 97 questions are waiting. 100 questions, 2 hours, +2 / −0.66, exactly as UPSC set them. Then see your score, UPSC's key for every question and explanations for 10 of them, starting with your mistakes. Free with Google sign-in; Pro unlocks every explanation in English and தமிழ்.
Take the 2020 paperOther years
Every UPSC Prelims GS Paper I from 2016 to 2026, each with UPSC's official key. See all past papers.
- 2026Provisional key · out of 198
- 2025Final key · out of 200
- 2024Final key · out of 194
- 2023Final key · out of 198
- 2022Final key · out of 198
- 2021Final key · out of 198
- 2020Final key · out of 196
- 2019Final key · out of 200
- 2018Final key · out of 200
- 2017Final key · out of 200
- 2016Final key · out of 200