QBManager

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26581 Acetophenone is prepared by the reaction of which of the following in the presence of $A l C l_{3}$ catalyst

1 Phenol and acetic acid

2 Benzene and acetone

3 Benzene and acetyl chloride

4 Phenol and acetone

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26582 Isopropyl alcohol on oxidation gives

1 Acetone

2 Acetaldehyde

3 Ether

4 Ethylene

Explanation:

Isopropyl alcohol forms acetone on oxidation.
The reaction is as follows:
$C H_{3} C H (O H) C H_{3} \underset{H^{+}}{\overset{[O]}{⟶}} C H_{3} C O C H_{3}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26583 On heating calcium acetate and calcium formate, the product formed is

1

C H_{3} C O C H_{3}

2

C H_{3} C H O

3

H C H O + C a C O_{3}

4

C H_{3} C H O + C a C O_{3}

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26584 Which of the following compound gives a ketone with Grignard reagent

1 Formaldehyde

2 Ethyl alcohol

3 Methyl cyanide

4 Methyl iodide

Explanation:

$C H_{3} - C \equiv N + C \overset{―}{H_{3}} M g^{+} B r \to$ $\begin{matrix} C H_{3} - C = N - M g B r \\ | \\ C H_{3} \end{matrix}$ $\overset{H y d r o l y s i s}{\to}$ $C H_{3} - C O - C H_{3} + N H_{3} +$ $M g < \begin{matrix} B r \\ O H \end{matrix}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26581 Acetophenone is prepared by the reaction of which of the following in the presence of $A l C l_{3}$ catalyst

1 Phenol and acetic acid

2 Benzene and acetone

3 Benzene and acetyl chloride

4 Phenol and acetone

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26582 Isopropyl alcohol on oxidation gives

1 Acetone

2 Acetaldehyde

3 Ether

4 Ethylene

Explanation:

Isopropyl alcohol forms acetone on oxidation.
The reaction is as follows:
$C H_{3} C H (O H) C H_{3} \underset{H^{+}}{\overset{[O]}{⟶}} C H_{3} C O C H_{3}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26583 On heating calcium acetate and calcium formate, the product formed is

1

C H_{3} C O C H_{3}

2

C H_{3} C H O

3

H C H O + C a C O_{3}

4

C H_{3} C H O + C a C O_{3}

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26584 Which of the following compound gives a ketone with Grignard reagent

1 Formaldehyde

2 Ethyl alcohol

3 Methyl cyanide

4 Methyl iodide

Explanation:

$C H_{3} - C \equiv N + C \overset{―}{H_{3}} M g^{+} B r \to$ $\begin{matrix} C H_{3} - C = N - M g B r \\ | \\ C H_{3} \end{matrix}$ $\overset{H y d r o l y s i s}{\to}$ $C H_{3} - C O - C H_{3} + N H_{3} +$ $M g < \begin{matrix} B r \\ O H \end{matrix}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26581 Acetophenone is prepared by the reaction of which of the following in the presence of $A l C l_{3}$ catalyst

1 Phenol and acetic acid

2 Benzene and acetone

3 Benzene and acetyl chloride

4 Phenol and acetone

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26582 Isopropyl alcohol on oxidation gives

1 Acetone

2 Acetaldehyde

3 Ether

4 Ethylene

Explanation:

Isopropyl alcohol forms acetone on oxidation.
The reaction is as follows:
$C H_{3} C H (O H) C H_{3} \underset{H^{+}}{\overset{[O]}{⟶}} C H_{3} C O C H_{3}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26583 On heating calcium acetate and calcium formate, the product formed is

1

C H_{3} C O C H_{3}

2

C H_{3} C H O

3

H C H O + C a C O_{3}

4

C H_{3} C H O + C a C O_{3}

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26584 Which of the following compound gives a ketone with Grignard reagent

1 Formaldehyde

2 Ethyl alcohol

3 Methyl cyanide

4 Methyl iodide

Explanation:

$C H_{3} - C \equiv N + C \overset{―}{H_{3}} M g^{+} B r \to$ $\begin{matrix} C H_{3} - C = N - M g B r \\ | \\ C H_{3} \end{matrix}$ $\overset{H y d r o l y s i s}{\to}$ $C H_{3} - C O - C H_{3} + N H_{3} +$ $M g < \begin{matrix} B r \\ O H \end{matrix}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26581 Acetophenone is prepared by the reaction of which of the following in the presence of $A l C l_{3}$ catalyst

1 Phenol and acetic acid

2 Benzene and acetone

3 Benzene and acetyl chloride

4 Phenol and acetone

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26582 Isopropyl alcohol on oxidation gives

1 Acetone

2 Acetaldehyde

3 Ether

4 Ethylene

Explanation:

Isopropyl alcohol forms acetone on oxidation.
The reaction is as follows:
$C H_{3} C H (O H) C H_{3} \underset{H^{+}}{\overset{[O]}{⟶}} C H_{3} C O C H_{3}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26583 On heating calcium acetate and calcium formate, the product formed is

1

C H_{3} C O C H_{3}

2

C H_{3} C H O

3

H C H O + C a C O_{3}

4

C H_{3} C H O + C a C O_{3}

ALDEHYDES, KETONES AND CARBOXYLIC ACID

26584 Which of the following compound gives a ketone with Grignard reagent

1 Formaldehyde

2 Ethyl alcohol

3 Methyl cyanide

4 Methyl iodide

Explanation:

$C H_{3} - C \equiv N + C \overset{―}{H_{3}} M g^{+} B r \to$ $\begin{matrix} C H_{3} - C = N - M g B r \\ | \\ C H_{3} \end{matrix}$ $\overset{H y d r o l y s i s}{\to}$ $C H_{3} - C O - C H_{3} + N H_{3} +$ $M g < \begin{matrix} B r \\ O H \end{matrix}$

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