**Assertion (A):** The use of chlorofluorocarbons is banned throughout the world nowadays. **Reason (R):** These chemicals cause skin cancer. - Environment MCQ General Science 2026 | ExamTest.live

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Assertion (A): The use of chlorofluorocarbons is banned throughout the world nowadays. Reason (R): These chemicals cause skin cancer.

Solution & Step-by-step Explanation

Assertion (A) is true; chlorofluorocarbons (CFCs) are banned globally under agreements like the Montreal Protocol due to their role in destroying the stratospheric ozone layer. Reason (R) is true in an indirect sense because ozone depletion allows harmful ultraviolet (UV-B) radiation to reach the Earth's surface, which causes skin cancer. However, CFCs themselves do not directly interact with skin cells to cause cancer; they damage the ozone layer, which acts as our environmental shield. Thus, R is a consequence of the issue caused by CFCs, but the primary legal reason they are banned is ozone depletion.

Try it yourself before checking the explanation above.

Assertion (A): The use of chlorofluorocarbons is banned throughout the world nowadays. Reason (R): These chemicals cause skin cancer.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

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