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Decreasing order of heat evolved upon ca...

Decreasing order of heat evolved upon catalytic hydrogenation of given reactants with a `H_(2)`(Pd/C) is:

A

`b gt c gt a gt d`

B

`d gt a gt c gt b`

C

`d gt c gt a gt b`

D

`c gt b gt a gt d`

Text Solution

Verified by Experts

The correct Answer is:
b

Most stable alkene less than heat of hydrogenation.
`ato4alphaH "Heat of hydrogenation " to d gt a gt c gt b`
`bto 10 alpha H`
`cto6 alpha H`
`dto3alphaH`
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