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Assertion (A) : Pentane and 2-methyl pen...

Assertion `(A)` : Pentane and 2-methyl pentane are homologous.
Reason `(R )`: Pentane is a straight-chain alkane, while 2-methyl pentane is a branched-chain alkane.

A

If both `(A)` and `(R )` are correct and `(R )` is the correct explanation for `(A)`.

B

If both `(A)` and `(R )` are correct and `(R )` is not the correct explanation.

C

If `(A)` is correct and `(R )` is incorrect.

D

If both `(A)` and `(R )` are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
Both `(A)` and `(R )` are correct but `(R )` is not the correct explanation for `(A)`.
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Knowledge Check

  • Assertion (A): Pentane and 3 methyl pentane are chain isomers. Reason (R ): Pentane is a straight-chain alkane while 3 -methyl pentane is branched-chain alkane.

    A
    both (A) and (R ) are true and (R ) is the correct explanation for (A).
    B
    both (A) and (R ) are true and (R ) is not the true explanation for (A)
    C
    (A) is true, but (R ) is false.
    D
    (A) is false and (R ) is true.

  • Assertion: Butane and 2-methylbutane are homologues. Reason: Butane is a straight chain alkane while while 2-methylbutane is a branched chain alkane.

    A
    If both assertion and Reason are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertion.
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false

  • Assertion : Butane and 2-methylbutane are homologues. Reason : Butane is a straight chain alkene while 2-methylbutane is a branched chain alkene.

    A
    If both assertion and reason are correct and reason is correct explanation for assertion.
    B
    If both assertion and reason are correct but reason is not correct explanation for assertion.
    C
    If assertion is correct but reason is incorrect.
    D
    If both assertion and reason are incorrect.