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Assertion (A) : A chemical reaction becomes faster at a higher temperature.

Reason (R) : At higher temperature, molecular motion becomes more rapid.

(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 a correct explanation of (A).

(c) (A) is true but (R) is false.

(d) (A) is false but (R) is true.

1 Answer

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

A chemical reaction generally becomes faster at a higher temperature because at higher temperature, molecular motion becomes more rapid and the molecules have higher kinetic energy. The process of a chemical reaction depends on the concentration, temperature and physical state of molecules and their nature. Normally, higher the temperature of molecules, faster would be the reaction.

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