322967
Assertion : Aryl sulphonic acid gives phenol on reacting with \(\mathrm{NaOH}\) at high temperature. Reason : This reaction is electrophilic substitution reaction.
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.
Explanation:
This is nucleophilic aromatic substitution reaction and occurs via the addition- elimination mechanism with \(\mathrm{SO}_{3}^{2-}\) as the leaving group. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322968
Assertion : During Dow process for the manufacture of phenol, diphenyl ether and \(\mathrm{p-}\) phenylphenol are obtained as byproducts. Reason : The reaction occurs through a benzyne mechanism.
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.
Explanation:
In Dow's process, chlorobenzene is fused with molten sodium hydroxide at \(350^{\circ} \mathrm{C}\) to convert it to sodiumphenoxide which upon acidification gives phenol. The reaction occurs via elimination-addition mechanism that involves a benzyne intermediate. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322969
The product \(\mathrm{X}\) and \(\mathrm{Z}\) in the following sequence are
1 iso-propyl benzene and acetone
2 cumene peroxide and acetone
3 iso-propyl benzene and iso-propyl alcohol
4 phenol and acetone.
Explanation:
KCET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322970
Identify ' \(\mathrm{C}\) ' in the following:
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322967
Assertion : Aryl sulphonic acid gives phenol on reacting with \(\mathrm{NaOH}\) at high temperature. Reason : This reaction is electrophilic substitution reaction.
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.
Explanation:
This is nucleophilic aromatic substitution reaction and occurs via the addition- elimination mechanism with \(\mathrm{SO}_{3}^{2-}\) as the leaving group. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322968
Assertion : During Dow process for the manufacture of phenol, diphenyl ether and \(\mathrm{p-}\) phenylphenol are obtained as byproducts. Reason : The reaction occurs through a benzyne mechanism.
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.
Explanation:
In Dow's process, chlorobenzene is fused with molten sodium hydroxide at \(350^{\circ} \mathrm{C}\) to convert it to sodiumphenoxide which upon acidification gives phenol. The reaction occurs via elimination-addition mechanism that involves a benzyne intermediate. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322969
The product \(\mathrm{X}\) and \(\mathrm{Z}\) in the following sequence are
1 iso-propyl benzene and acetone
2 cumene peroxide and acetone
3 iso-propyl benzene and iso-propyl alcohol
4 phenol and acetone.
Explanation:
KCET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322970
Identify ' \(\mathrm{C}\) ' in the following:
322967
Assertion : Aryl sulphonic acid gives phenol on reacting with \(\mathrm{NaOH}\) at high temperature. Reason : This reaction is electrophilic substitution reaction.
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.
Explanation:
This is nucleophilic aromatic substitution reaction and occurs via the addition- elimination mechanism with \(\mathrm{SO}_{3}^{2-}\) as the leaving group. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322968
Assertion : During Dow process for the manufacture of phenol, diphenyl ether and \(\mathrm{p-}\) phenylphenol are obtained as byproducts. Reason : The reaction occurs through a benzyne mechanism.
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.
Explanation:
In Dow's process, chlorobenzene is fused with molten sodium hydroxide at \(350^{\circ} \mathrm{C}\) to convert it to sodiumphenoxide which upon acidification gives phenol. The reaction occurs via elimination-addition mechanism that involves a benzyne intermediate. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322969
The product \(\mathrm{X}\) and \(\mathrm{Z}\) in the following sequence are
1 iso-propyl benzene and acetone
2 cumene peroxide and acetone
3 iso-propyl benzene and iso-propyl alcohol
4 phenol and acetone.
Explanation:
KCET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322970
Identify ' \(\mathrm{C}\) ' in the following:
322967
Assertion : Aryl sulphonic acid gives phenol on reacting with \(\mathrm{NaOH}\) at high temperature. Reason : This reaction is electrophilic substitution reaction.
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.
Explanation:
This is nucleophilic aromatic substitution reaction and occurs via the addition- elimination mechanism with \(\mathrm{SO}_{3}^{2-}\) as the leaving group. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322968
Assertion : During Dow process for the manufacture of phenol, diphenyl ether and \(\mathrm{p-}\) phenylphenol are obtained as byproducts. Reason : The reaction occurs through a benzyne mechanism.
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.
Explanation:
In Dow's process, chlorobenzene is fused with molten sodium hydroxide at \(350^{\circ} \mathrm{C}\) to convert it to sodiumphenoxide which upon acidification gives phenol. The reaction occurs via elimination-addition mechanism that involves a benzyne intermediate. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322969
The product \(\mathrm{X}\) and \(\mathrm{Z}\) in the following sequence are
1 iso-propyl benzene and acetone
2 cumene peroxide and acetone
3 iso-propyl benzene and iso-propyl alcohol
4 phenol and acetone.
Explanation:
KCET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322970
Identify ' \(\mathrm{C}\) ' in the following:
