1
UPSC Civil Service Prelims Paper I 2024 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66

Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?

A

Hydrogen peroxide

B

Hydronium

C

Oxygen

D

Water vapour

2
UPSC Civil Service Prelims Paper I 2023 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

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
3
UPSC Civil Service Prelims Paper I 2022 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

With reference to India, consider the following statements :

1. Monazite is a source of rare earths.

2. Monazite contains thorium.

3. Monazite occurs naturally in the entire Indian coastal sands in India.

4. In India, Government bodies only can process or export monazite.

Which of the statements given above are correct?

A
1, 2 and 3 only
B
1, 2 and 4 only
C
3 and 4 only
D
1, 2, 3 and 4
4
UPSC Civil Service Prelims Paper I 2022 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
Change Language

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements :

1. Its fibres can be blended with wool and cotton fibres to reinforce their properties.

2. Containers made of it can be used to store any alcoholic beverage.

3. Bottles made of it can be recycled into other products.

4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions.

Which of the statements given above are correct ?

A
1 and 3
B
2 and 4
C
1 and 4
D
2 and 3
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