Question

Given below are two statements. Assertion (A): Sprinkling Kerosene on still water surface helps in treatment of malaria. Reason (R): Kerosene is poisonous to mosquitoes. Choose the most appropriate answer.

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

Hint:

Kerosene on still water kills mosquito larvae; it does not treat the disease malaria in a patient.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:

• We must judge Assertion (A) (kerosene on still water helps in the treatment of malaria) and Reason (R) (kerosene is poisonous to mosquitoes).

Step 2: Detailed Explanation:

• Assertion (A): Kerosene sprinkled on still water forms a thin film that cuts off the air supply of mosquito larvae. It helps in preventing mosquito breeding, but it does not treat malaria, which is the disease of a patient. So (A) is not correct.

• Reason (R): Kerosene is poisonous to mosquitoes, so (R) is correct.

• Therefore (A) is not correct but (R) is correct, which is Option (D).

Step 3: Final Answer:

• The correct option is (D).