2023 Prelims Paper 1 UPSC Question Paper

UPSC Prelims Paper 1 Question Papers

2023 Prelims Paper 1 UPSC Questions

21.
Consider the following statements:
Statement-I: India, despite having uranium deposits, depends on coal for most its electricity production.
Statement-II: Uranium, enriched to the extent at of least 60%, is required for the production of electricity.
Which one of the following is correct in respect of the above statements?
A.
Both Statement-I and Statement-II are correct, and Statement-II is the correct explanation for Statement-I
B.
Both Statement-I and Statement-II are correct, but Statement-II is not the correct explanation for Statement-I
C.
Statement-I is correct, but Statement-II is incorrect
D.
Statement-I is incorrect, but Statement-II is correct
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ANSWER :
C. Statement-I is correct, but Statement-II is incorrect
22.
Consider the following statements:
Statement-1: Marsupials are not naturally found in India.
Statement-II: Marsupials can thrive only in montane grasslands with no predators.
Which one of the following is correct in respect of the above statements?
A.
Both Statement-I and Statement-II are correct, and Statement-II is the correct explanation for Statement-I
B.
Both Statement-I and Statement-II are correct, but Statement-II is not the correct explanation for Statement-I
C.
Statement-I is correct, but Statement-II is incorrect
D.
Statement-I is incorrect, but Statement-II is correct
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ANSWER :
C. Statement-I is correct, but Statement-II is incorrect
23.
‘Invasive Species Specialist Group’ (that develops the Global Invasive Species Database) belongs to which organization?
A.
The International Union for Conservation of Nature
B.
The United Nations Environment Programme
C.
The United Nations World Commission for Environment and Development
D.
The World Wide Fund for Nature
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ANSWER :
A. The International Union for Conservation of Nature
24.
Consider the following fauna:
1. Lion-tailed Macaque
2. Malabar Civet
3. Sambar Deer
How many of the following fauna are generally nocturnal or most active after sunset?
A.
Only one
B.
Only two
C.
All three
D.
None
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ANSWER :
A. Only one
25.
Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?
A.
Butterflies
B.
Dragonflies
C.
Honeybees
D.
Wasps
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ANSWER :
C. Honeybees
26.
Consider the following statements:
1. Some mushrooms have medicinal properties.
2.Some mushrooms have psycho-active properties.
3.Some mushrooms have insecticidal properties.
4.Some mushrooms have bioluminescent properties.
How many of the above statements are correct?
A.
Only one
B.
Only two
C.
Only three
D.
All four
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ANSWER :
D. All four
27.
Consider the following statements regarding the Indian squirrels:
1.They build nests by making burrows in the ground.
2.They store their food materials like nuts and seeds in the ground.
3.They are omnivorous.
How many of the above statements are correct?
A.
Only one
B.
Only two
C.
All three
D.
None
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ANSWER :
B. Only two
28.
Consider the following statements:
1. Some microorganisms can grow in environments with temperature above the boiling point of water.
2.Some microorganisms can grow in environments with temperature below the freezing point of water.
3.Some microorganisms can grow in highly acidic environment with a pH below 3.
How many of the above statements are correct?
A.
Only one
B.
Only two
C.
All three
D.
None
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ANSWER :
C. All three
29.
Which one of the following makes a tool with a stick to scrape insects from a hole in a tree or a log of wood?
A.
Fishing cat
B.
Orangutan
C.
Otter
D.
Sloth bear
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ANSWER :
B. Orangutan
30.
Consider the following:
1. Aerosols
2.Foam agents
3.Fire retardants
4.Lubricants
In the making of how many of the above are hydrofluorocarbons used?
A.
Only one
B.
Only two
C.
Only three
D.
All four
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ANSWER :
C. Only three