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Which of the following reactions is an e...

Which of the following reactions is an endothermic reaction?

A

Combustion of methane

B

Decomposition of water

C

Dehydrogenation of ethaneto ethene

D

Conversion of graphite to diamond

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The correct Answer is:
b,c,d
Combustion of methane is exothermic. All other given reactions are endothermic.
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