Question

Which of the following are endothermic processes?

• A. combustion of glucose
• B. decomposition of water
• C. dehydrogenation of ethane to ethene
• D. conversion of graphite to diamond

Answer 1

Answer: (B), (C), (D)

The correct options are
B decomposition of water
C dehydrogenation of ethane to ethene
D conversion of graphite to diamond

During endothermic chemical process which take place absorbing energy from surrounding, the potential energy of system of chemical substance increases.
So they all are endothermic as they require energy to process.