Aromatic Hydrocarbon
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CHXI13:HYDROCARBONS

318245 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

1 \(\pi\)-electron ring attracts electrophile and repels nucleophile.
2 \(\pi\)-electron cloud attracts nucleophile and repels electrophile.
3 Due to presence of double bonds
4 Due to resonance.
CHXI13:HYDROCARBONS

318246 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
Friedel-Craft's reaction is used to introduce an alkyl or acyl group in benzene nucleus.
Statement B :
Benzene is a solvent for the Friedel-Crafts alkylation of bromobenzene.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI13:HYDROCARBONS

318247 During nitration of benzene, the attacking electrophile is

1 \(\mathrm{NO}_{3}^{-}\)
2 \(\mathrm{NO}_{2}^{-}\)
3 \(\mathrm{NO}_{2}^{+}\)
4 \(\mathrm{HNO}_{3}\)
CHXI13:HYDROCARBONS

318248 Assertion :
Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason :
Alkyl halides are less reactive than acyl halides.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXI13:HYDROCARBONS

318245 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

1 \(\pi\)-electron ring attracts electrophile and repels nucleophile.
2 \(\pi\)-electron cloud attracts nucleophile and repels electrophile.
3 Due to presence of double bonds
4 Due to resonance.
CHXI13:HYDROCARBONS

318246 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
Friedel-Craft's reaction is used to introduce an alkyl or acyl group in benzene nucleus.
Statement B :
Benzene is a solvent for the Friedel-Crafts alkylation of bromobenzene.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI13:HYDROCARBONS

318247 During nitration of benzene, the attacking electrophile is

1 \(\mathrm{NO}_{3}^{-}\)
2 \(\mathrm{NO}_{2}^{-}\)
3 \(\mathrm{NO}_{2}^{+}\)
4 \(\mathrm{HNO}_{3}\)
CHXI13:HYDROCARBONS

318248 Assertion :
Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason :
Alkyl halides are less reactive than acyl halides.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXI13:HYDROCARBONS

318245 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

1 \(\pi\)-electron ring attracts electrophile and repels nucleophile.
2 \(\pi\)-electron cloud attracts nucleophile and repels electrophile.
3 Due to presence of double bonds
4 Due to resonance.
CHXI13:HYDROCARBONS

318246 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
Friedel-Craft's reaction is used to introduce an alkyl or acyl group in benzene nucleus.
Statement B :
Benzene is a solvent for the Friedel-Crafts alkylation of bromobenzene.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI13:HYDROCARBONS

318247 During nitration of benzene, the attacking electrophile is

1 \(\mathrm{NO}_{3}^{-}\)
2 \(\mathrm{NO}_{2}^{-}\)
3 \(\mathrm{NO}_{2}^{+}\)
4 \(\mathrm{HNO}_{3}\)
CHXI13:HYDROCARBONS

318248 Assertion :
Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason :
Alkyl halides are less reactive than acyl halides.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXI13:HYDROCARBONS

318245 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

1 \(\pi\)-electron ring attracts electrophile and repels nucleophile.
2 \(\pi\)-electron cloud attracts nucleophile and repels electrophile.
3 Due to presence of double bonds
4 Due to resonance.
CHXI13:HYDROCARBONS

318246 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
Friedel-Craft's reaction is used to introduce an alkyl or acyl group in benzene nucleus.
Statement B :
Benzene is a solvent for the Friedel-Crafts alkylation of bromobenzene.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI13:HYDROCARBONS

318247 During nitration of benzene, the attacking electrophile is

1 \(\mathrm{NO}_{3}^{-}\)
2 \(\mathrm{NO}_{2}^{-}\)
3 \(\mathrm{NO}_{2}^{+}\)
4 \(\mathrm{HNO}_{3}\)
CHXI13:HYDROCARBONS

318248 Assertion :
Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason :
Alkyl halides are less reactive than acyl halides.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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