UPSC Civil Services Pre. Exam Answer Key (Paper 1) – 04 October 2020

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UPSC (Union Public Service Commission) conducts the Civil Services Pre. Examination (Paper 1), on 04 October 2020. The general studies question paper of this exam with the answer key is available here.

Exam – UPSC Civil Services Prelims 2020 General Studies (Paper 1) Answer key
Subject – General Studies (GS) Paper -1
Date of Exam – 04/October/2020
BOOKLET SERIES B
Total Question – 100


Q1. With reference to carbon nanotubes, consider the following statements :

  1. They can be used as carriers of drugs and antigens in the human body.
  2. I They can be made into artificial blood capillaries for an injured part of human body.
  3. They can be used in biochemical sensors.
  4. Carbon nanotubes are biodegradable.

Which of the statements given above are correct ?
(a) 1 and 2 only
(b) 2, 3 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4 only

Q2. Consider the following activities :
1. Spraying pesticides on a crop field.
2. Inspecting the craters of I active volcanoes
3. Collecting breath samples from spouting whales for DNA analysis.
At the present level of technology, which of the above activities can be successfully carried out by using drones ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Q3. “The experiment will employ a trio of spacecraft flying information in the shape of an equilateral triangle that has sides one million kilometers long, with lasers shining between the craft.” The experiment in question refers to
(a) Voyager-2
(b) New Horizons
(c) LISA Pathfinder
(d) Evolved LISA

Q4. Consider the following statements :
1. Genetic changes can be introduced in the cells that produce eggs sperms of a prospective parent.
2. A person’s genome-can be edited before birth at the early embryonic stage.
3. Human induced pluripotent stem cells can be injected into the embryo of a pig.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 2 only
(d) 1, 2 and 3

Q5. What is the importance bf using Pneumococcal Conjugate Vaccines in India ?

  1. These vaccines are effective against pneumonia as well as meningitis and sepsis.
  2. Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.
  3. These vaccines have no side effects and cause no allergic reactions.

Select the correct answer using the code given below :
(a) 1 only
(b) 1 and 2 only
(c) 3 only
(d) 1, 2 and 3

Q6. In India, the term “Public Key Infrastructure” is used in the context of
(a) Digital security infrastructure
(b) Food security infrastructure
(c) Health care and education infrastructure
(d) Telecommunication and transportation infrastructure

Q7. Which of the following statements are correct regarding the general difference between plant and animal cells ?
1. Plant cells have cellulose cell walls whilst animal cells do not.
2. Plant cells do not have plasma membrane unlike animal cells which do.
3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles.
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 2 and 3 only 1
(c) 1 and 3 only
(d) 1, 2 and 3

Q8. Which of the following are the reasons/factors for exposure to benzene pollution ?
1. Automobile exhaust
2. Tobacco smoke
3. Wood burning
4. Using varnished wooden furniture
5. Using products made of polyurethane
Select the correct answer using the code given below :
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3, 4 and 5

Q9. If another global financial crisis happens in the near future, which of the following actions/policies are most likely to give some immunity to India?
1. Not depending on short-term foreign borrowings
2. Opening up to more foreign banks
3. Maintaining full capital account convertibility
Select the correct answer using the code given below:
(a) 1 only
(b) 1 and 2 only
(c) 3 only
(d) 1, 2 and 3

Q10. If you withdraw ₹ 1,00,000 in cash from your Demand Deposit Account at your bank, the immediate effect on aggregate money supply in the economy will be
(a) to reduce it by ₹ 1,00,000
(b) to increase it by ₹ 1,00,000
(c) to increase it by more than ₹ 1,00,000
(d) to leave it unchanged

Q11. With reference to the cultural history of India, which one of the following, is the correct description of the term paramitas)?
(a) The earliest Dharmashastra text a written in aphoristic (sutra) style
(b) Philosophical schools that did not accept the authority of Vedas
(c) Perfections whose attainment led to the Bodhisattva path
(d) Powerful merchant guilds of early medieval South India

Q12. In the context of Indian history, the Rakhmabai case of (1884) evolved around
1. women’s right to gain education.
2. age of consent
3. restitution of conjugal rights
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Q13. Indigo cultivation in India declined by the beginning of the 20th century Because of
(a) peasant resistance to the oppressive conduct of planters
(b) its unprofitability in the world market because of new inventions
(c) national leaders’ opposition to the cultivation of indigo
(d) Government control over the planters

Q14. Wellesley established the Fort William College at Calcutta because
(a) he was asked by the Board of Directors at London to do so
(b) he wnnted to revive interest in oriental learning in India
(c) he wanted to provide William Carey and his associates with employment
(d) he wanted to trair British civilians for administrative purpose in India

15. With reference to the history of India, “Ulgulan” or the Great Tumult is the description of which of the following events?
(a) The Revolt of 1857
(b) Car The Mappila Rebellion of 1921
(c) The Indigo Revolt of 1859 – 60
(d) Birsa Munda’s Revolt of 1899-1900

Q16. With reference to the scholars/litterateurs of ancient India, consider the following statements :
1. Panini is associated with Pushyamitra Shunga.
2. Amarasimha associated with Harshavardhana.
3. Kalidasa is associated with Chandra Gupta – II.
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3

Q17. In the context of recent advances in human reproductive technology, “Pronuclear Transfer” is used for
(a) fertilization of egg in vitro by the donor sperm.
(b) genetic modification of sperm producing cells.
(c) development of stem cells into functional embryos
(d) prevention of mitochondrial diseases in offspring

Q18. With the present state of development, Artificial Intelligence can effectively do which of the following ?
1. Bring down electricity consumption in industrial units
2. Create meaningful short stories and songs
3. Disease diagnosis
4. Text-to-Speech Conversion
5. Wireless transmission of electrical energy.
Select the correct answer using the code given below :
(a) 1, 2, 3 and 5 only
(b) 1, 3 and 4 only
(c) 2, 4 and 5 only
(d) 1, 2, 3, 4 and 5

Q19. With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
1. VLC uses electromagnetic spectrum wavelengths 375 to 780nm.
2. VLC is known as long-range optical wireless communication.
3. VLC can transmit large amounts of data faster than Bluetooth.
4. VLC has no electromagnetic interference.
Select the correct answer using the code given below :
(a) 1, 2 and 3 only
(b) 1, 2 and 4 only
(c) 1, 3 and 4 only
(d) 2, 3 and 4 only

Q20. With reference to “Blockchain Technology”, consider the following statements :
1. It is a public ledger that everyone can inspect, but, which no single user controls.
2. The structure and design of blockchain is such that all the data in it are about cryptocurrency only.
3. Applications that depend on basic features of blockchain can be developed without anybody’s permission.
Which of the statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 2 only
(d) 1 and 3 only

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