QBManager

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26612 Reduction of $> C = O$ to $C H_{2}$ can be carried out with

1 Catalytic reduction

2

N a / C_{2} H_{5} O H

3 Wolf-Kischner reduction

4

L i A l H_{4}

Explanation:

(c)Reduction of $> C = O$ to $C H_{2}$ can be carried out with Wolf Kischner reduction.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26613 For $C_{6} H_{5} C H O$ which of the following is incorrect

1 On oxidation it yields benzoic acid

2 It is used in perfumery

3 It is an aromatic aldehyde

4 On reduction yields phenol

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26615 Which of the following is incorrect

1

F e C l_{3}

is used in the detection of phenols

2 Fehling solution is used in the detection of glucose

3 Tollen’s reagent is used in detection of unsaturation

4

N a H S O_{3}

is used in the detection of carbonyl compounds

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26616 Consider the following statement Acetophenone can be prepared by $(1)$ Oxidation of $1 -$ phenylethanol $(2)$ Reaction of benzalthanol with methyl magnesium bromide $(3)$ Friedel craft’s reaction of benzene with acetyl chloride $(4)$ Distillation of calcium benzoate

1

1

and

2

2

1

and

4

3

1

and

3

4

3

and

4

Explanation:

(c) $\underset{1 - Phenylethanol}{C_{6} H_{5} C H O H C H_{3}} \overset{[O]}{\to} \underset{Acetophenone}{C_{6} H_{5} C O C H_{3}}$
$C_{6} H_{6} + C H_{3} C O C l \underset{reaction}{\overset{Friedel craft's}{\to}} C_{6} H_{5} C O C H_{3} + H C l$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26612 Reduction of $> C = O$ to $C H_{2}$ can be carried out with

1 Catalytic reduction

2

N a / C_{2} H_{5} O H

3 Wolf-Kischner reduction

4

L i A l H_{4}

Explanation:

(c)Reduction of $> C = O$ to $C H_{2}$ can be carried out with Wolf Kischner reduction.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26613 For $C_{6} H_{5} C H O$ which of the following is incorrect

1 On oxidation it yields benzoic acid

2 It is used in perfumery

3 It is an aromatic aldehyde

4 On reduction yields phenol

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26615 Which of the following is incorrect

1

F e C l_{3}

is used in the detection of phenols

2 Fehling solution is used in the detection of glucose

3 Tollen’s reagent is used in detection of unsaturation

4

N a H S O_{3}

is used in the detection of carbonyl compounds

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26616 Consider the following statement Acetophenone can be prepared by $(1)$ Oxidation of $1 -$ phenylethanol $(2)$ Reaction of benzalthanol with methyl magnesium bromide $(3)$ Friedel craft’s reaction of benzene with acetyl chloride $(4)$ Distillation of calcium benzoate

1

1

and

2

2

1

and

4

3

1

and

3

4

3

and

4

Explanation:

(c) $\underset{1 - Phenylethanol}{C_{6} H_{5} C H O H C H_{3}} \overset{[O]}{\to} \underset{Acetophenone}{C_{6} H_{5} C O C H_{3}}$
$C_{6} H_{6} + C H_{3} C O C l \underset{reaction}{\overset{Friedel craft's}{\to}} C_{6} H_{5} C O C H_{3} + H C l$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26612 Reduction of $> C = O$ to $C H_{2}$ can be carried out with

1 Catalytic reduction

2

N a / C_{2} H_{5} O H

3 Wolf-Kischner reduction

4

L i A l H_{4}

Explanation:

(c)Reduction of $> C = O$ to $C H_{2}$ can be carried out with Wolf Kischner reduction.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26613 For $C_{6} H_{5} C H O$ which of the following is incorrect

1 On oxidation it yields benzoic acid

2 It is used in perfumery

3 It is an aromatic aldehyde

4 On reduction yields phenol

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26615 Which of the following is incorrect

1

F e C l_{3}

is used in the detection of phenols

2 Fehling solution is used in the detection of glucose

3 Tollen’s reagent is used in detection of unsaturation

4

N a H S O_{3}

is used in the detection of carbonyl compounds

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26616 Consider the following statement Acetophenone can be prepared by $(1)$ Oxidation of $1 -$ phenylethanol $(2)$ Reaction of benzalthanol with methyl magnesium bromide $(3)$ Friedel craft’s reaction of benzene with acetyl chloride $(4)$ Distillation of calcium benzoate

1

1

and

2

2

1

and

4

3

1

and

3

4

3

and

4

Explanation:

(c) $\underset{1 - Phenylethanol}{C_{6} H_{5} C H O H C H_{3}} \overset{[O]}{\to} \underset{Acetophenone}{C_{6} H_{5} C O C H_{3}}$
$C_{6} H_{6} + C H_{3} C O C l \underset{reaction}{\overset{Friedel craft's}{\to}} C_{6} H_{5} C O C H_{3} + H C l$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26612 Reduction of $> C = O$ to $C H_{2}$ can be carried out with

1 Catalytic reduction

2

N a / C_{2} H_{5} O H

3 Wolf-Kischner reduction

4

L i A l H_{4}

Explanation:

(c)Reduction of $> C = O$ to $C H_{2}$ can be carried out with Wolf Kischner reduction.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26613 For $C_{6} H_{5} C H O$ which of the following is incorrect

1 On oxidation it yields benzoic acid

2 It is used in perfumery

3 It is an aromatic aldehyde

4 On reduction yields phenol

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26615 Which of the following is incorrect

1

F e C l_{3}

is used in the detection of phenols

2 Fehling solution is used in the detection of glucose

3 Tollen’s reagent is used in detection of unsaturation

4

N a H S O_{3}

is used in the detection of carbonyl compounds

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26616 Consider the following statement Acetophenone can be prepared by $(1)$ Oxidation of $1 -$ phenylethanol $(2)$ Reaction of benzalthanol with methyl magnesium bromide $(3)$ Friedel craft’s reaction of benzene with acetyl chloride $(4)$ Distillation of calcium benzoate

1

1

and

2

2

1

and

4

3

1

and

3

4

3

and

4

Explanation:

(c) $\underset{1 - Phenylethanol}{C_{6} H_{5} C H O H C H_{3}} \overset{[O]}{\to} \underset{Acetophenone}{C_{6} H_{5} C O C H_{3}}$
$C_{6} H_{6} + C H_{3} C O C l \underset{reaction}{\overset{Friedel craft's}{\to}} C_{6} H_{5} C O C H_{3} + H C l$

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