Q.

Regarding hyper conjugation, which is correct?

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a

It is temporary effect

b

More substituted alkenes are less stable

c

Heat of hydrogenation is directly proportional to stability of alkenes

d

It occurs through overlap between σ- bond orbital of a C-H bond and π- bond or empty p-orbital

answer is D.

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Detailed Solution

  1. It is permanent effect
  2. more substituted alkenes being more stable than less substituted alkenes.
  3. The heat of hydrogenation is the measure of the stability of an alkene. Lower the heat of hydrogenation of alkene the more stable it is
  4. It occurs through overlap between σ- bond orbital of a C-H bond and π- bond or empty p-orbital
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