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Assertion (A) : Toluene on Friedel-Craft...

Assertion (A) : Toluene on Friedel-Crafts Methylation gives o - and p-xylene.
Reason ( R) : `CH_(3)` group bonded to benzene ring increases density at o - and p- position.

A

Both A and R are correct and R is the correct explanation of A.

B

Both A and R are correct but R is not the correct explanation of A.

C

Both A and R are not correct.

D

A is not correct but R is correct.

Text Solution

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The correct Answer is:
A
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Assertion (A) : Toluene on Friedel Crafts methylation gives o- and p- xylene. Reason (R): CH_3 -group bonded to benzene ring increases electron density at o- and p- position.

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Knowledge Check

  • Assertion (A) Toluene on Friedal Crafts methylation gives o - and p-xylene. Reason ( R) CH_(3) -group bonded to benzene ring increases density at o - and p- position.

    A
    Both A and B are correct and R is the correct explanation of A
    B
    Both A and R are not correct
    C
    Both A and R are not correct
    D
    A is not correct but R is correct
  • S-I: Toluene on Friedel craft's methylation gives o- and p-xylene S-II: CH_(3) -group bonded to benzene ring increase electron density at o- and p- position.

    A
    S-I & S-II are correct, S-II is corret explanation of S-I
    B
    S-I & S-II are correct, S-II is not correct explanation of S-I
    C
    S-I is true but S-II is false
    D
    S-I is false but S-II is true.
  • Assertion (A) : Nitrobenzene does not undergo Friedel-crafts reaction. Reason (R) : Nitrogroup in nitrobenzene deactivates the benzene ring.

    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and R are true but R is not a correct explanation of A.
    C
    A is true but R is false.
    D
    A is false but R is false.
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    Assertion : Friedel - Crafts reaction is used to introduce an alkyl or acyl group in benzene nucleus Reason : Benzene is a solvent for the Friedel - Crafts alkylation of bromobenzene.

    Assertion: m- Methoxyphenol is a stronger acid than p -methoxyphenol. Reason: Methoxy group exerts +R -effect at both o -and p- positions.

    Assertion: Aniline does not undergo Friedel-Crafts reactions. Reason: -NH_2 group of aniline reacts with AlCl_3 to give acid-base reaction.

    Assertion (A) : Aniline is a weaker base than p-anisidine. Reason (R) : The benzene ring in aniline exerts a +R eefect.

    Assertion (A) : Aromatic carboxylic acids do not undergo Friedel Crafts reaction. Reason (R) : AlCl_(3) is Lewis acid and gets bounded to carboxyl group.