1.

Assertion: The bond energy of gt C = O is less than gt C = C lt in alkenes. Reason: The carbon atom in carbonyl group is sp^(2) hybridised.

Answer»

If both assertion and reason are true and the reason is the correct EXPLANATION of the assertion
If both assertion and reason are true but reason is not the correct explanation of the assertion
If assertion is true but reason is false
If assertion is false but reason is true

Solution :The bond energy of carbonyl GROUP is `179 Kcal mol^(-1)` and in `C=C` the bond energy is `145.8` Kcal. The carbonyl group shows resonance and thus POSSESSES higher bond energy. `C = O harr C^(+) -O^(-)`


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