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Question

Assertion :A catalyst is more effectively in finely divided form. Reason: Finely divided form has more surface area.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
A catalyst is more effectively in finely divided form. Finely divided form has more surface area. Higher is the surface area of the catalyst, higher will be the amount of reactants that come in contact with catalyst. This will increase the rate of the reaction and the effectiveness of the catalyst.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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