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Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
I only know that combustion is exothermic process.. how to know about others.. do we need to get it by heart.
117. Which of the following is not an endothermic reaction? (a) Combustion of methane (c) Dehydrogenation of ethane to ethylene (d) Conversion of graphite to diamond (b) Decomposition of water 119 A PO io nan zara far
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Dinesh khalmaniya 1 Best Answer
Consider the options:- A) Combustion is always an exothermic process. B) Decomposition of water requires energy. Hence it is endothermic. C) Dehydrogenation is an endothermic reaction since energy is required to break the C−H bonds to convert ethane to ethylene. D) Graphite is more stable than diamond and energy is needed to convert graphite into diamond. The extra energy that has to be provided ends up in the tetrahedral structure of diamond. Hence options B,C and D are the right answer.
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it is saying not endothermic sir
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Dinesh khalmaniya 1
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