Reactions of Phenols
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323326 When phenol is treated with \(\mathrm{CHCl}_{3}\) and \(\mathrm{NaOH}\), the product formed is :

1 Benzaldehyde
2 Salicylaldehyde
3 Salicylic acid
4 Benzoic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323327 In the reaction :the electrophile involved is
supporting img

1 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{anion}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
2 \({\text{dichlorocarbene}}\,\,\,{\text{(:}}\left. {{\text{CC}}{{\text{l}}_{\text{2}}}} \right)\)
3 \({\text{formyl}}\,{\text{cation}}\left( {\mathop {\text{C}}\limits^ \oplus {\text{HO}}} \right)\)
4 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{cation}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
NEET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323328 Assertion :
Phenol undergoes Kolbe reaction whereas ethanol does not.
Reason :
Phenoxide ion is more basic than ethoxide ion.

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.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323329 supporting img
The electrophile involved in above reaction has ____ lone pair of electrons on central carbon atom.

1 1
2 0
3 2
4 3
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323326 When phenol is treated with \(\mathrm{CHCl}_{3}\) and \(\mathrm{NaOH}\), the product formed is :

1 Benzaldehyde
2 Salicylaldehyde
3 Salicylic acid
4 Benzoic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323327 In the reaction :the electrophile involved is
supporting img

1 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{anion}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
2 \({\text{dichlorocarbene}}\,\,\,{\text{(:}}\left. {{\text{CC}}{{\text{l}}_{\text{2}}}} \right)\)
3 \({\text{formyl}}\,{\text{cation}}\left( {\mathop {\text{C}}\limits^ \oplus {\text{HO}}} \right)\)
4 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{cation}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
NEET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323328 Assertion :
Phenol undergoes Kolbe reaction whereas ethanol does not.
Reason :
Phenoxide ion is more basic than ethoxide ion.

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.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323329 supporting img
The electrophile involved in above reaction has ____ lone pair of electrons on central carbon atom.

1 1
2 0
3 2
4 3
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323326 When phenol is treated with \(\mathrm{CHCl}_{3}\) and \(\mathrm{NaOH}\), the product formed is :

1 Benzaldehyde
2 Salicylaldehyde
3 Salicylic acid
4 Benzoic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323327 In the reaction :the electrophile involved is
supporting img

1 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{anion}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
2 \({\text{dichlorocarbene}}\,\,\,{\text{(:}}\left. {{\text{CC}}{{\text{l}}_{\text{2}}}} \right)\)
3 \({\text{formyl}}\,{\text{cation}}\left( {\mathop {\text{C}}\limits^ \oplus {\text{HO}}} \right)\)
4 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{cation}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
NEET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323328 Assertion :
Phenol undergoes Kolbe reaction whereas ethanol does not.
Reason :
Phenoxide ion is more basic than ethoxide ion.

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.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323329 supporting img
The electrophile involved in above reaction has ____ lone pair of electrons on central carbon atom.

1 1
2 0
3 2
4 3
For More Updates join with Us
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323326 When phenol is treated with \(\mathrm{CHCl}_{3}\) and \(\mathrm{NaOH}\), the product formed is :

1 Benzaldehyde
2 Salicylaldehyde
3 Salicylic acid
4 Benzoic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323327 In the reaction :the electrophile involved is
supporting img

1 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{anion}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
2 \({\text{dichlorocarbene}}\,\,\,{\text{(:}}\left. {{\text{CC}}{{\text{l}}_{\text{2}}}} \right)\)
3 \({\text{formyl}}\,{\text{cation}}\left( {\mathop {\text{C}}\limits^ \oplus {\text{HO}}} \right)\)
4 \({\text{dichloromethyl}}{\mkern 1mu} {\mkern 1mu} {\text{cation}}\left( {\mathop {\text{C}}\limits^\Theta {\text{HC}}{{\text{l}}_{\text{2}}}} \right)\)
NEET - 2018
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323328 Assertion :
Phenol undergoes Kolbe reaction whereas ethanol does not.
Reason :
Phenoxide ion is more basic than ethoxide ion.

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.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323329 supporting img
The electrophile involved in above reaction has ____ lone pair of electrons on central carbon atom.

1 1
2 0
3 2
4 3