Assertion :Alkenes and alkynes are more reactive than alkanes. Reason: Alkenes and alkynes possess multiple bonds.

If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.

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If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion.

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If assertion is CORRECT, but reason is INCORRECT.

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If assertion is INCORRECT, but reason is CORRECT.

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Solution

The correct option is A If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.
Alkenes and alkynes are unsaturated hydrocarbons with atleast one double bond which is a $Π$ bond, whereas alkanes contain only $σ$ bonds. As $σ$ bonds are stronger than $Π$ bonds, alkanes are less reactive than alkenes and alkynes.

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