1
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

Why is there a concern about copper smelting plants?

1. They may release lethal quantities of carbon monoxide into environment. 

2. The copper slag can cause the leaching of some heavy metals into the environment.

3. They may release sulphur dioxide as a pollutant.

Select the correct answer using the code given below.

A
1 and 2 only
B
2 and 3 only
C
1 and 3 olnly
D
1, 2 and 3
2
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language
'R2 Code of Practices’ constitutes a tool available for promoting the adoption of
A
environmentally responsible practices recycling industry 
B
ecological management of ‘Wetlands of International Importance’ under the Ramsar Convention
C
sustainable practices in the cultivation of agriculture crops in degraded lands
D
'Environmental Impact Assessment' in- the exploitation of natural resources
3
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

Which of the following are detritivores?

1. Earthworms

2. Jellyfish

3. Millipedes

4. Seahorses

5. Woodlice

Select the correct answer using the code given below.

A
1, 2 and 4 only
B
2, 3, 4 and 5 only
C
1, 3 and 5 only
D
1, 2, 3, 4 and 5
4
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language
In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?
A
Carbon cycle
B
Nitrogen cycle
C
Phosphorus cycle
D
Sulphur cycle
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