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ALDEHYDES, KETONES AND CARBOXYLIC ACID

28144 The compound not soluble in acetic acid is

1

C a C O_{3}

2

C a O

3

C a C_{2} O_{4}

4

C a (O H)_{2}

Explanation:

(c) $C a C_{2} O_{4}$ is a salt of oxalic acid which is more acidic than acetic acid, so it is insoluble in acetic acid.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28145 Iodoform test is not given by

1 Acetone

2 Ethyl alcohol

3 None of these

4 Acetic acid

Explanation:

(c)Iodoform test is given by all the compounds having $\begin{matrix} C H_{3} - C - \\ | | \\ O \end{matrix} $o r $ \begin{matrix} C H_{3} - C - \\ | \\ O H \end{matrix}$ group.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28146 How will you convert butan $- 2 -$ one to propanoic acid

1 Tollen’s reagent

2 Fehling’s solution

3

N a O H / I_{2} / H^{+}

4

N a O H / N a I / H^{+}

Explanation:

$\begin{matrix} C_{2} H_{5} - C - C H_{3} \\ | | \\ O \end{matrix}$ $+ I_{2} + N a O H \to$ $C_{2} H_{5} C O_{2}^{-} N a^{+} + C H I_{3}$
$C_{2} H_{5} C O_{2}^{-} N a^{+} \overset{H^{+}}{\to} C_{2} H_{5} C O O H + N a^{+}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28147 Which of the acids cannot be prepared by Grignard reagent

1 Acetic acid

2 Succinic acid

3 Formic acid

4 All of these

Explanation:

(c)Formic acid can not be prepared by grignard’s reagent. Higher acids are prepared by the reaction of $C O_{2}$ on grignard’s reagent

364-s17

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28148 Benzophenone can be converted into benzene using

1 Fused alkali

2 Anhydrous

A l C l_{3}

3 Sodium amalgam in water

4 Acidified dichromate

Explanation:

(a) $\underset{Benzophenone}{C_{6} H_{5} C O C_{6} H_{5}} + K O H \overset{Fusion}{\to}$ $\underset{Benzene}{C_{6} H_{6}} + \underset{Pot . benzoate}{C_{6} H_{5} C O O K}$
$C_{6} H_{5} C O O K + K O H \overset{Δ}{\to} K_{2} C O_{3} + \underset{Benzene}{C_{6} H_{6}}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28144 The compound not soluble in acetic acid is

1

C a C O_{3}

2

C a O

3

C a C_{2} O_{4}

4

C a (O H)_{2}

Explanation:

(c) $C a C_{2} O_{4}$ is a salt of oxalic acid which is more acidic than acetic acid, so it is insoluble in acetic acid.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28145 Iodoform test is not given by

1 Acetone

2 Ethyl alcohol

3 None of these

4 Acetic acid

Explanation:

(c)Iodoform test is given by all the compounds having $\begin{matrix} C H_{3} - C - \\ | | \\ O \end{matrix} $o r $ \begin{matrix} C H_{3} - C - \\ | \\ O H \end{matrix}$ group.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28146 How will you convert butan $- 2 -$ one to propanoic acid

1 Tollen’s reagent

2 Fehling’s solution

3

N a O H / I_{2} / H^{+}

4

N a O H / N a I / H^{+}

Explanation:

$\begin{matrix} C_{2} H_{5} - C - C H_{3} \\ | | \\ O \end{matrix}$ $+ I_{2} + N a O H \to$ $C_{2} H_{5} C O_{2}^{-} N a^{+} + C H I_{3}$
$C_{2} H_{5} C O_{2}^{-} N a^{+} \overset{H^{+}}{\to} C_{2} H_{5} C O O H + N a^{+}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28147 Which of the acids cannot be prepared by Grignard reagent

1 Acetic acid

2 Succinic acid

3 Formic acid

4 All of these

Explanation:

(c)Formic acid can not be prepared by grignard’s reagent. Higher acids are prepared by the reaction of $C O_{2}$ on grignard’s reagent

364-s17

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28148 Benzophenone can be converted into benzene using

1 Fused alkali

2 Anhydrous

A l C l_{3}

3 Sodium amalgam in water

4 Acidified dichromate

Explanation:

(a) $\underset{Benzophenone}{C_{6} H_{5} C O C_{6} H_{5}} + K O H \overset{Fusion}{\to}$ $\underset{Benzene}{C_{6} H_{6}} + \underset{Pot . benzoate}{C_{6} H_{5} C O O K}$
$C_{6} H_{5} C O O K + K O H \overset{Δ}{\to} K_{2} C O_{3} + \underset{Benzene}{C_{6} H_{6}}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28144 The compound not soluble in acetic acid is

1

C a C O_{3}

2

C a O

3

C a C_{2} O_{4}

4

C a (O H)_{2}

Explanation:

(c) $C a C_{2} O_{4}$ is a salt of oxalic acid which is more acidic than acetic acid, so it is insoluble in acetic acid.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28145 Iodoform test is not given by

1 Acetone

2 Ethyl alcohol

3 None of these

4 Acetic acid

Explanation:

(c)Iodoform test is given by all the compounds having $\begin{matrix} C H_{3} - C - \\ | | \\ O \end{matrix} $o r $ \begin{matrix} C H_{3} - C - \\ | \\ O H \end{matrix}$ group.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28146 How will you convert butan $- 2 -$ one to propanoic acid

1 Tollen’s reagent

2 Fehling’s solution

3

N a O H / I_{2} / H^{+}

4

N a O H / N a I / H^{+}

Explanation:

$\begin{matrix} C_{2} H_{5} - C - C H_{3} \\ | | \\ O \end{matrix}$ $+ I_{2} + N a O H \to$ $C_{2} H_{5} C O_{2}^{-} N a^{+} + C H I_{3}$
$C_{2} H_{5} C O_{2}^{-} N a^{+} \overset{H^{+}}{\to} C_{2} H_{5} C O O H + N a^{+}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28147 Which of the acids cannot be prepared by Grignard reagent

1 Acetic acid

2 Succinic acid

3 Formic acid

4 All of these

Explanation:

(c)Formic acid can not be prepared by grignard’s reagent. Higher acids are prepared by the reaction of $C O_{2}$ on grignard’s reagent

364-s17

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28148 Benzophenone can be converted into benzene using

1 Fused alkali

2 Anhydrous

A l C l_{3}

3 Sodium amalgam in water

4 Acidified dichromate

Explanation:

(a) $\underset{Benzophenone}{C_{6} H_{5} C O C_{6} H_{5}} + K O H \overset{Fusion}{\to}$ $\underset{Benzene}{C_{6} H_{6}} + \underset{Pot . benzoate}{C_{6} H_{5} C O O K}$
$C_{6} H_{5} C O O K + K O H \overset{Δ}{\to} K_{2} C O_{3} + \underset{Benzene}{C_{6} H_{6}}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28144 The compound not soluble in acetic acid is

1

C a C O_{3}

2

C a O

3

C a C_{2} O_{4}

4

C a (O H)_{2}

Explanation:

(c) $C a C_{2} O_{4}$ is a salt of oxalic acid which is more acidic than acetic acid, so it is insoluble in acetic acid.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28145 Iodoform test is not given by

1 Acetone

2 Ethyl alcohol

3 None of these

4 Acetic acid

Explanation:

(c)Iodoform test is given by all the compounds having $\begin{matrix} C H_{3} - C - \\ | | \\ O \end{matrix} $o r $ \begin{matrix} C H_{3} - C - \\ | \\ O H \end{matrix}$ group.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28146 How will you convert butan $- 2 -$ one to propanoic acid

1 Tollen’s reagent

2 Fehling’s solution

3

N a O H / I_{2} / H^{+}

4

N a O H / N a I / H^{+}

Explanation:

$\begin{matrix} C_{2} H_{5} - C - C H_{3} \\ | | \\ O \end{matrix}$ $+ I_{2} + N a O H \to$ $C_{2} H_{5} C O_{2}^{-} N a^{+} + C H I_{3}$
$C_{2} H_{5} C O_{2}^{-} N a^{+} \overset{H^{+}}{\to} C_{2} H_{5} C O O H + N a^{+}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28147 Which of the acids cannot be prepared by Grignard reagent

1 Acetic acid

2 Succinic acid

3 Formic acid

4 All of these

Explanation:

(c)Formic acid can not be prepared by grignard’s reagent. Higher acids are prepared by the reaction of $C O_{2}$ on grignard’s reagent

364-s17

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28148 Benzophenone can be converted into benzene using

1 Fused alkali

2 Anhydrous

A l C l_{3}

3 Sodium amalgam in water

4 Acidified dichromate

Explanation:

(a) $\underset{Benzophenone}{C_{6} H_{5} C O C_{6} H_{5}} + K O H \overset{Fusion}{\to}$ $\underset{Benzene}{C_{6} H_{6}} + \underset{Pot . benzoate}{C_{6} H_{5} C O O K}$
$C_{6} H_{5} C O O K + K O H \overset{Δ}{\to} K_{2} C O_{3} + \underset{Benzene}{C_{6} H_{6}}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28144 The compound not soluble in acetic acid is

1

C a C O_{3}

2

C a O

3

C a C_{2} O_{4}

4

C a (O H)_{2}

Explanation:

(c) $C a C_{2} O_{4}$ is a salt of oxalic acid which is more acidic than acetic acid, so it is insoluble in acetic acid.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28145 Iodoform test is not given by

1 Acetone

2 Ethyl alcohol

3 None of these

4 Acetic acid

Explanation:

(c)Iodoform test is given by all the compounds having $\begin{matrix} C H_{3} - C - \\ | | \\ O \end{matrix} $o r $ \begin{matrix} C H_{3} - C - \\ | \\ O H \end{matrix}$ group.

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28146 How will you convert butan $- 2 -$ one to propanoic acid

1 Tollen’s reagent

2 Fehling’s solution

3

N a O H / I_{2} / H^{+}

4

N a O H / N a I / H^{+}

Explanation:

$\begin{matrix} C_{2} H_{5} - C - C H_{3} \\ | | \\ O \end{matrix}$ $+ I_{2} + N a O H \to$ $C_{2} H_{5} C O_{2}^{-} N a^{+} + C H I_{3}$
$C_{2} H_{5} C O_{2}^{-} N a^{+} \overset{H^{+}}{\to} C_{2} H_{5} C O O H + N a^{+}$

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28147 Which of the acids cannot be prepared by Grignard reagent

1 Acetic acid

2 Succinic acid

3 Formic acid

4 All of these

Explanation:

(c)Formic acid can not be prepared by grignard’s reagent. Higher acids are prepared by the reaction of $C O_{2}$ on grignard’s reagent

364-s17

ALDEHYDES, KETONES AND CARBOXYLIC ACID

28148 Benzophenone can be converted into benzene using

1 Fused alkali

2 Anhydrous

A l C l_{3}

3 Sodium amalgam in water

4 Acidified dichromate

Explanation:

(a) $\underset{Benzophenone}{C_{6} H_{5} C O C_{6} H_{5}} + K O H \overset{Fusion}{\to}$ $\underset{Benzene}{C_{6} H_{6}} + \underset{Pot . benzoate}{C_{6} H_{5} C O O K}$
$C_{6} H_{5} C O O K + K O H \overset{Δ}{\to} K_{2} C O_{3} + \underset{Benzene}{C_{6} H_{6}}$

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