Which gas is responsible for the depletion of the Ozone layer? MCQ with Answer and Explanation

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Which gas is responsible for the depletion of the Ozone layer?

A. Nitrogen Oxide

B. Methane

C. Carbon Dioxide

D. Chlorofluorocarbons (CFCs)

Answer: Option D

Solution (By JKExamLibrary)

CFCs release chlorine atoms when exposed to UV radiation, which actively destroy ozone molecules in the stratosphere.

This question belongs to: Static General Knowledge Science and Technology

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What is the hardest part of the human body?

A. Tooth enamel

B. Bone

C. Nails

D. Skull

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Correct Answer: Option A

Explanation:
Tooth enamel is the most mineralized and hardest substance in the human body.

This question belongs to: Static General Knowledge Science and Technology

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Which planet is famous for its rings?

A. Mercury

B. Mars

C. Earth

D. Saturn

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Correct Answer: Option D

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India's first successful cryogenic engine was used in:

A. PSLV

B. SLV-3

C. ASLV

D. GSLV-D5

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Correct Answer: Option D

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GSLV-D5 marked the successful use of indigenous cryogenic engine.

This question belongs to: Static General Knowledge Science and Technology

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