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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322971 Name the reagent used in the conversion of benzene to benzene sulphonic acid during the preparation of phenol

1 Sulphuric acid

2 Water

3 Diazonium salt

4 Oleum

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322972 Benzene diazonium chloride on hydrolysis gives

1 Benzene

2 Benzyl alcohol

3 Phenol

4 Chlorobenzene

Explanation:

$C_{6} H_{5} N_{2} Cl + H_{2} O \to \underset{Phenol}{C_{6} H_{5} OH} + N_{2} + H_{2} O$

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322973 Which among the following is not the method of prepration of phenol?

1

Cumene \to_{(ii) dil .Hcl, Δ}^{(i) O_{2} /Co  -  naphthalene,423K} Phenol

2

Chlorobenzene \to_{(ii) H_{3} O^{+},150 atm}^{(i) NaOH ,623 K} Phenol

3

Aniline \to_{(ii) H_{2} O, Δ}^{(i) NaN O_{2} + HCl,273 K} Phenol

4

Benzene  +  conc . H_{2} S O_{4} \overset{Δ}{\to} Phenol

Explanation:

Benzene with conc. $H_{2} {SO}_{4}$ gives benzene sulphonic acid but not phenol. Rest are correct methods of preparation of phenol.
supporting img

MHTCET - 2022

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322974 Benzenediazonium chloride can be converted into phenol by treating it with

1

H_{3} {PO}_{3}, H_{2} O, CuCl

2

H_{2} O

, heat

3 Alcohol, heat

4

{HBF}_{4}

and

{NaNO}_{2} / Cu

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322975 $Cumene \overset{O_{2}}{\to} X .$ . The product $X$ is

1 Phenol

2 Cumene hydroperoxide

3 Toluene

4 Acetone

Explanation:

Cumene i.e., $C_{6} H_{5} CH {({CH}_{3})}_{2}$ on oxidation gives cumene hydroperoxide

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322971 Name the reagent used in the conversion of benzene to benzene sulphonic acid during the preparation of phenol

1 Sulphuric acid

2 Water

3 Diazonium salt

4 Oleum

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322972 Benzene diazonium chloride on hydrolysis gives

1 Benzene

2 Benzyl alcohol

3 Phenol

4 Chlorobenzene

Explanation:

$C_{6} H_{5} N_{2} Cl + H_{2} O \to \underset{Phenol}{C_{6} H_{5} OH} + N_{2} + H_{2} O$

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322973 Which among the following is not the method of prepration of phenol?

1

Cumene \to_{(ii) dil .Hcl, Δ}^{(i) O_{2} /Co  -  naphthalene,423K} Phenol

2

Chlorobenzene \to_{(ii) H_{3} O^{+},150 atm}^{(i) NaOH ,623 K} Phenol

3

Aniline \to_{(ii) H_{2} O, Δ}^{(i) NaN O_{2} + HCl,273 K} Phenol

4

Benzene  +  conc . H_{2} S O_{4} \overset{Δ}{\to} Phenol

Explanation:

Benzene with conc. $H_{2} {SO}_{4}$ gives benzene sulphonic acid but not phenol. Rest are correct methods of preparation of phenol.
supporting img

MHTCET - 2022

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322974 Benzenediazonium chloride can be converted into phenol by treating it with

1

H_{3} {PO}_{3}, H_{2} O, CuCl

2

H_{2} O

, heat

3 Alcohol, heat

4

{HBF}_{4}

and

{NaNO}_{2} / Cu

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322975 $Cumene \overset{O_{2}}{\to} X .$ . The product $X$ is

1 Phenol

2 Cumene hydroperoxide

3 Toluene

4 Acetone

Explanation:

Cumene i.e., $C_{6} H_{5} CH {({CH}_{3})}_{2}$ on oxidation gives cumene hydroperoxide

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322971 Name the reagent used in the conversion of benzene to benzene sulphonic acid during the preparation of phenol

1 Sulphuric acid

2 Water

3 Diazonium salt

4 Oleum

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322972 Benzene diazonium chloride on hydrolysis gives

1 Benzene

2 Benzyl alcohol

3 Phenol

4 Chlorobenzene

Explanation:

$C_{6} H_{5} N_{2} Cl + H_{2} O \to \underset{Phenol}{C_{6} H_{5} OH} + N_{2} + H_{2} O$

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322973 Which among the following is not the method of prepration of phenol?

1

Cumene \to_{(ii) dil .Hcl, Δ}^{(i) O_{2} /Co  -  naphthalene,423K} Phenol

2

Chlorobenzene \to_{(ii) H_{3} O^{+},150 atm}^{(i) NaOH ,623 K} Phenol

3

Aniline \to_{(ii) H_{2} O, Δ}^{(i) NaN O_{2} + HCl,273 K} Phenol

4

Benzene  +  conc . H_{2} S O_{4} \overset{Δ}{\to} Phenol

Explanation:

Benzene with conc. $H_{2} {SO}_{4}$ gives benzene sulphonic acid but not phenol. Rest are correct methods of preparation of phenol.
supporting img

MHTCET - 2022

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322974 Benzenediazonium chloride can be converted into phenol by treating it with

1

H_{3} {PO}_{3}, H_{2} O, CuCl

2

H_{2} O

, heat

3 Alcohol, heat

4

{HBF}_{4}

and

{NaNO}_{2} / Cu

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322975 $Cumene \overset{O_{2}}{\to} X .$ . The product $X$ is

1 Phenol

2 Cumene hydroperoxide

3 Toluene

4 Acetone

Explanation:

Cumene i.e., $C_{6} H_{5} CH {({CH}_{3})}_{2}$ on oxidation gives cumene hydroperoxide

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322971 Name the reagent used in the conversion of benzene to benzene sulphonic acid during the preparation of phenol

1 Sulphuric acid

2 Water

3 Diazonium salt

4 Oleum

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322972 Benzene diazonium chloride on hydrolysis gives

1 Benzene

2 Benzyl alcohol

3 Phenol

4 Chlorobenzene

Explanation:

$C_{6} H_{5} N_{2} Cl + H_{2} O \to \underset{Phenol}{C_{6} H_{5} OH} + N_{2} + H_{2} O$

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322973 Which among the following is not the method of prepration of phenol?

1

Cumene \to_{(ii) dil .Hcl, Δ}^{(i) O_{2} /Co  -  naphthalene,423K} Phenol

2

Chlorobenzene \to_{(ii) H_{3} O^{+},150 atm}^{(i) NaOH ,623 K} Phenol

3

Aniline \to_{(ii) H_{2} O, Δ}^{(i) NaN O_{2} + HCl,273 K} Phenol

4

Benzene  +  conc . H_{2} S O_{4} \overset{Δ}{\to} Phenol

Explanation:

Benzene with conc. $H_{2} {SO}_{4}$ gives benzene sulphonic acid but not phenol. Rest are correct methods of preparation of phenol.
supporting img

MHTCET - 2022

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322974 Benzenediazonium chloride can be converted into phenol by treating it with

1

H_{3} {PO}_{3}, H_{2} O, CuCl

2

H_{2} O

, heat

3 Alcohol, heat

4

{HBF}_{4}

and

{NaNO}_{2} / Cu

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322975 $Cumene \overset{O_{2}}{\to} X .$ . The product $X$ is

1 Phenol

2 Cumene hydroperoxide

3 Toluene

4 Acetone

Explanation:

Cumene i.e., $C_{6} H_{5} CH {({CH}_{3})}_{2}$ on oxidation gives cumene hydroperoxide

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322971 Name the reagent used in the conversion of benzene to benzene sulphonic acid during the preparation of phenol

1 Sulphuric acid

2 Water

3 Diazonium salt

4 Oleum

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322972 Benzene diazonium chloride on hydrolysis gives

1 Benzene

2 Benzyl alcohol

3 Phenol

4 Chlorobenzene

Explanation:

$C_{6} H_{5} N_{2} Cl + H_{2} O \to \underset{Phenol}{C_{6} H_{5} OH} + N_{2} + H_{2} O$

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322973 Which among the following is not the method of prepration of phenol?

1

Cumene \to_{(ii) dil .Hcl, Δ}^{(i) O_{2} /Co  -  naphthalene,423K} Phenol

2

Chlorobenzene \to_{(ii) H_{3} O^{+},150 atm}^{(i) NaOH ,623 K} Phenol

3

Aniline \to_{(ii) H_{2} O, Δ}^{(i) NaN O_{2} + HCl,273 K} Phenol

4

Benzene  +  conc . H_{2} S O_{4} \overset{Δ}{\to} Phenol

Explanation:

Benzene with conc. $H_{2} {SO}_{4}$ gives benzene sulphonic acid but not phenol. Rest are correct methods of preparation of phenol.
supporting img

MHTCET - 2022

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322974 Benzenediazonium chloride can be converted into phenol by treating it with

1

H_{3} {PO}_{3}, H_{2} O, CuCl

2

H_{2} O

, heat

3 Alcohol, heat

4

{HBF}_{4}

and

{NaNO}_{2} / Cu

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322975 $Cumene \overset{O_{2}}{\to} X .$ . The product $X$ is

1 Phenol

2 Cumene hydroperoxide

3 Toluene

4 Acetone

Explanation:

Cumene i.e., $C_{6} H_{5} CH {({CH}_{3})}_{2}$ on oxidation gives cumene hydroperoxide

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