Directions: The Assertion (A) and Reason (R) have been put forward in the following questions. Read both statements carefully and choose the correct alternative from the following:

Assertion (A): Charcoal is better fuel than wood.

Reason (R): Wood is smokeless and leaves no residue.

Mark the correct choice.

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Both assertion (a) and Reason (R) are true, and reason (R) is the correct explanation of assertion (a).

Both assertion (a) and Reason (R) are true, but reason (R) is not the correct explanation of assertion (a).

Assertion (a) is true, but reason (R) is false.

Assertion (a) is false, but reason (R) is true.

answer is C.

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Detailed Solution

Assertion (a) is true, but reason (R) is false.
Assertion: Charcoal is considered a better fuel than wood because when the same amount of charcoal and wood is burnt, charcoal produces almost twice the heat wood produces. Charcoal produces less smoke than wood.
Reason: Charcoal is better fuel than wood. But wood produced more smoke on burning than charcoal. Charcoal leaves no residue after burning, but wood leaves a lot of ashes after burning. Also, the Calorific value of charcoal is much higher than wood. Charcoal produces more heat on burning than wood.

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