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Question

Chemical reactions require energy for

A
Oxidation
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B
Entropy
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C
Activation
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D
Enthalpy
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Solution

The correct option is D Activation
Chemical reactions take place mainly at a specific temperature in presence of a catalyst. The substrate and product have different energy state. The energy gap between the substrate and the product is known as activation energy which is the minimum energy required to initiate a reaction. In presence of a catalyst, the activation energy lowers and the substrate changes into the product.
So, the correct answer is option C.

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