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CHXII10:HALOALKANES AND HALOARENES

322783 Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as

1 Chloropicrin

2 Mustard gas

3 Lewisite

4 Phosgene

Explanation:

${CHCl}_{3} \overset{Air}{⟶} {COCl}_{2}$ Phosgene)

NCERT Exemplar

CHXII10:HALOALKANES AND HALOARENES

322784 In storing chloroform, the substance added

1

1 %

ethyl alchohol

2

50 %

ethyl alchohol

3

1 %

acetaldehyde

4

1 %

acetone

CHXII10:HALOALKANES AND HALOARENES

322785 Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

1 Carbonyl chloride

2 Ethyl alcohol

3 Sodium hydroxide

4 Nitric acid

Explanation:

Chloroform is oxidised to a poisonous gas, by aerial oxidation.
$\begin{array}{l} C H C l_{3} + [O] \to \underset{P h o s g e n e}{C O C l_{2}} + H C l \end{array}$
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. It converts ${COCl}_{2}$ to non-poisonous ethyl carbonate.
$\begin{array}{l} C O C l_{2} + 2 C_{2} H_{5} O H \to O = C (O C_{2} H_{5})_{2} \\ + 2 H C l \end{array}$

CHXII10:HALOALKANES AND HALOARENES

322786 Statement A :
${CHCl}_{3}$ is stored in dark bottles.
Statement B :
${CHCl}_{3}$ is oxidised in dark.

1 Both statements are incorrect.

2 Statement A is correct but statement B is incorrect.

3 Statement A is incorrect but statement B is correct.

4 Both statements are correct.

Explanation:

${CHCl}_{3}$ is stored in dark bottles to prevent oxidation of ${CHCl}_{3}$ in presence of sunlight.

CHXII10:HALOALKANES AND HALOARENES

322787 R in the following reaction is
supporting img

1

N_{2}

2

{CHCl}_{3} / KOH

(alcoholic)

3

{NH}_{3}

4

KCN

CHXII10:HALOALKANES AND HALOARENES

322783 Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as

1 Chloropicrin

2 Mustard gas

3 Lewisite

4 Phosgene

Explanation:

${CHCl}_{3} \overset{Air}{⟶} {COCl}_{2}$ Phosgene)

NCERT Exemplar

CHXII10:HALOALKANES AND HALOARENES

322784 In storing chloroform, the substance added

1

1 %

ethyl alchohol

2

50 %

ethyl alchohol

3

1 %

acetaldehyde

4

1 %

acetone

CHXII10:HALOALKANES AND HALOARENES

322785 Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

1 Carbonyl chloride

2 Ethyl alcohol

3 Sodium hydroxide

4 Nitric acid

Explanation:

Chloroform is oxidised to a poisonous gas, by aerial oxidation.
$\begin{array}{l} C H C l_{3} + [O] \to \underset{P h o s g e n e}{C O C l_{2}} + H C l \end{array}$
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. It converts ${COCl}_{2}$ to non-poisonous ethyl carbonate.
$\begin{array}{l} C O C l_{2} + 2 C_{2} H_{5} O H \to O = C (O C_{2} H_{5})_{2} \\ + 2 H C l \end{array}$

CHXII10:HALOALKANES AND HALOARENES

322786 Statement A :
${CHCl}_{3}$ is stored in dark bottles.
Statement B :
${CHCl}_{3}$ is oxidised in dark.

1 Both statements are incorrect.

2 Statement A is correct but statement B is incorrect.

3 Statement A is incorrect but statement B is correct.

4 Both statements are correct.

Explanation:

${CHCl}_{3}$ is stored in dark bottles to prevent oxidation of ${CHCl}_{3}$ in presence of sunlight.

CHXII10:HALOALKANES AND HALOARENES

322787 R in the following reaction is
supporting img

1

N_{2}

2

{CHCl}_{3} / KOH

(alcoholic)

3

{NH}_{3}

4

KCN

CHXII10:HALOALKANES AND HALOARENES

322783 Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as

1 Chloropicrin

2 Mustard gas

3 Lewisite

4 Phosgene

Explanation:

${CHCl}_{3} \overset{Air}{⟶} {COCl}_{2}$ Phosgene)

NCERT Exemplar

CHXII10:HALOALKANES AND HALOARENES

322784 In storing chloroform, the substance added

1

1 %

ethyl alchohol

2

50 %

ethyl alchohol

3

1 %

acetaldehyde

4

1 %

acetone

CHXII10:HALOALKANES AND HALOARENES

322785 Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

1 Carbonyl chloride

2 Ethyl alcohol

3 Sodium hydroxide

4 Nitric acid

Explanation:

Chloroform is oxidised to a poisonous gas, by aerial oxidation.
$\begin{array}{l} C H C l_{3} + [O] \to \underset{P h o s g e n e}{C O C l_{2}} + H C l \end{array}$
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. It converts ${COCl}_{2}$ to non-poisonous ethyl carbonate.
$\begin{array}{l} C O C l_{2} + 2 C_{2} H_{5} O H \to O = C (O C_{2} H_{5})_{2} \\ + 2 H C l \end{array}$

CHXII10:HALOALKANES AND HALOARENES

322786 Statement A :
${CHCl}_{3}$ is stored in dark bottles.
Statement B :
${CHCl}_{3}$ is oxidised in dark.

1 Both statements are incorrect.

2 Statement A is correct but statement B is incorrect.

3 Statement A is incorrect but statement B is correct.

4 Both statements are correct.

Explanation:

${CHCl}_{3}$ is stored in dark bottles to prevent oxidation of ${CHCl}_{3}$ in presence of sunlight.

CHXII10:HALOALKANES AND HALOARENES

322787 R in the following reaction is
supporting img

1

N_{2}

2

{CHCl}_{3} / KOH

(alcoholic)

3

{NH}_{3}

4

KCN

CHXII10:HALOALKANES AND HALOARENES

322783 Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as

1 Chloropicrin

2 Mustard gas

3 Lewisite

4 Phosgene

Explanation:

${CHCl}_{3} \overset{Air}{⟶} {COCl}_{2}$ Phosgene)

NCERT Exemplar

CHXII10:HALOALKANES AND HALOARENES

322784 In storing chloroform, the substance added

1

1 %

ethyl alchohol

2

50 %

ethyl alchohol

3

1 %

acetaldehyde

4

1 %

acetone

CHXII10:HALOALKANES AND HALOARENES

322785 Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

1 Carbonyl chloride

2 Ethyl alcohol

3 Sodium hydroxide

4 Nitric acid

Explanation:

Chloroform is oxidised to a poisonous gas, by aerial oxidation.
$\begin{array}{l} C H C l_{3} + [O] \to \underset{P h o s g e n e}{C O C l_{2}} + H C l \end{array}$
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. It converts ${COCl}_{2}$ to non-poisonous ethyl carbonate.
$\begin{array}{l} C O C l_{2} + 2 C_{2} H_{5} O H \to O = C (O C_{2} H_{5})_{2} \\ + 2 H C l \end{array}$

CHXII10:HALOALKANES AND HALOARENES

322786 Statement A :
${CHCl}_{3}$ is stored in dark bottles.
Statement B :
${CHCl}_{3}$ is oxidised in dark.

1 Both statements are incorrect.

2 Statement A is correct but statement B is incorrect.

3 Statement A is incorrect but statement B is correct.

4 Both statements are correct.

Explanation:

${CHCl}_{3}$ is stored in dark bottles to prevent oxidation of ${CHCl}_{3}$ in presence of sunlight.

CHXII10:HALOALKANES AND HALOARENES

322787 R in the following reaction is
supporting img

1

N_{2}

2

{CHCl}_{3} / KOH

(alcoholic)

3

{NH}_{3}

4

KCN

CHXII10:HALOALKANES AND HALOARENES

322783 Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as

1 Chloropicrin

2 Mustard gas

3 Lewisite

4 Phosgene

Explanation:

${CHCl}_{3} \overset{Air}{⟶} {COCl}_{2}$ Phosgene)

NCERT Exemplar

CHXII10:HALOALKANES AND HALOARENES

322784 In storing chloroform, the substance added

1

1 %

ethyl alchohol

2

50 %

ethyl alchohol

3

1 %

acetaldehyde

4

1 %

acetone

CHXII10:HALOALKANES AND HALOARENES

322785 Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

1 Carbonyl chloride

2 Ethyl alcohol

3 Sodium hydroxide

4 Nitric acid

Explanation:

Chloroform is oxidised to a poisonous gas, by aerial oxidation.
$\begin{array}{l} C H C l_{3} + [O] \to \underset{P h o s g e n e}{C O C l_{2}} + H C l \end{array}$
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. It converts ${COCl}_{2}$ to non-poisonous ethyl carbonate.
$\begin{array}{l} C O C l_{2} + 2 C_{2} H_{5} O H \to O = C (O C_{2} H_{5})_{2} \\ + 2 H C l \end{array}$

CHXII10:HALOALKANES AND HALOARENES

322786 Statement A :
${CHCl}_{3}$ is stored in dark bottles.
Statement B :
${CHCl}_{3}$ is oxidised in dark.

1 Both statements are incorrect.

2 Statement A is correct but statement B is incorrect.

3 Statement A is incorrect but statement B is correct.

4 Both statements are correct.

Explanation:

${CHCl}_{3}$ is stored in dark bottles to prevent oxidation of ${CHCl}_{3}$ in presence of sunlight.

CHXII10:HALOALKANES AND HALOARENES

322787 R in the following reaction is
supporting img

1

N_{2}

2

{CHCl}_{3} / KOH

(alcoholic)

3

{NH}_{3}

4

KCN

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