Question

Assertion (A) : Increase in carbon dioxide would melt polar ice.
Reason (R) : Global temperature would rise.

• A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false
• D. (A) is false, but (R) is true

Hint:

Assertion (A) : Increase in carbon dioxide would melt polar ice. Reason (R) : Global temperature would rise.

Answer 1

The Correct Option is A

Assertion (A): An increase in atmospheric carbon dioxide, a major greenhouse gas, enhances the greenhouse effect, trapping more heat and leading to global warming. This rise in global temperatures causes ice sheets and glaciers, including polar ice, to melt at an accelerated rate. Thus, the assertion is true. Reason (R): Increased levels of greenhouse gases like carbon dioxide trap outgoing infrared radiation, leading to a rise in the average temperature of the Earth’s climate system, known as global warming or climate change. Thus, the reason is true. The melting of polar ice (Assertion) is a direct consequence of the rise in global temperature (Reason) caused by increased carbon dioxide. Therefore, the Reason correctly explains the Assertion. This matches option (1).