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Question
Chemistry
Which of the following is not an endothermic reaction?
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Q. Which of the following is not an endothermic reaction?
J & K CET
J & K CET 2005
A
Dehydrogenation
B
Ethane to ethene
C
Combustion of propane
D
Change of chlorine molecule into chlorine atoms
Solution:
Combustion of propane is an exothermic reaction because the enthalpy of combustion (ie, $ \Delta H $ ) is always negative.