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Q.

Which of the following reactions is an endothermic reaction?

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a

Bromination of benzene

b

Iodination of benzene

c

Chlorination of benzene

d

Fluorination of benzene

answer is D.

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Detailed Solution

In general, endothermic reactions include the formation of chemical bonds by heat absorption from the atmosphere. Decomposition of Calcium Carbonate is an example of thermal decomposition and endothermic reaction. At 1200K, calcium carbonate decomposes to give carbon dioxide and calcium oxide.

Iodination of benzene is endothermic reaction.

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