Question

Assertion (A) : But-1-ene and 2-methylprop-l-ene are position isomers.
Reason (R) : Position isomers have same molecular formula but differ in position
of substituent or functional group on the carbon skeleton.
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Answer 1

Assertion - But - 1 - ene and 2 - methylprop- 1 - ene are position isomers .

Reason - position isomers have same molecular formula but differ in position of substituent or functional group on the carbon skeleton.

Both assertion and reason are correct statement and the reason is appropriate for the assertion.