Assertion :The central carbon-carbon bond in butane is larger than that in $1, 3$ -butadiene Reason: The more is s-character in hybridization, the bond length

Assertion is true, Reason is true and Reason is correct explanation for Assertion

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Assertion is true, Reason is true and Reason is NOT the correct explanation for Assertion

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Assertion is true, Reason is false

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Assertion is false, Reason is true

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Solution

The correct option is A
Assertion is true, Reason is true and Reason is correct explanation for Assertion

The central carbon-carbon bond in butane is larger than that in $1, 3$ -butadiene as it has partial double bond character.
The more is s-character in hybridization, less is the bond length.
Assertion is true, Reason is true and Reason is correct explanation for Assertion.

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