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CHXI08:REDOX REACTIONS

315361 Identify reductant in following reaction.
$H_{2} S + {NO}_{2} \to H_{2} O + NO + S$

1

H_{2} S

2

{NO}_{2}

3

NO

4

S

Explanation:

$H_{2} S$ undergoes oxidation $(- 2$ to 0 $)$ . So reductant.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315362 Assertion :
${Cl}_{2}$ gas bleaches the articles permanently.
Reason :
${Cl}_{2}$ is a strong reducing agent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

${Cl}_{2}$ is an effective oxidizing agent. When it comes into contact with various substances, it can cause oxidation reactions, leading to the removal of color from these materials. In the presence of moisture, ${Cl}_{2}$ exhibits its bleaching properties by oxidizing the substances. So the option (3) is correct

CHXI08:REDOX REACTIONS

315363 Which of the following acts as both oxidant and reductant?

1

{HNO}_{3}

2

{HNO}_{2}

3 Both

H N O_{3} & H N O_{2}

4 Neither

{HNO}_{3}

nor

{HNO}_{2}

Explanation:

O.N. of $N$ in ${HNO}_{2}$ is +3
Max. O.N. of $N$ is +5
Min. O.N. of $N$ is $- 3$
Thus O.N. of $N$ in ${HNO}_{2}$ can show an increase or decrease as the case may be. That is why ${HNO}_{2}$ acts as oxidant and reductant both.
O.N. of $N$ in ${HNO}_{3}$ is +5 . Hence it can act only as an oxidant.

CHXI08:REDOX REACTIONS

315364 Identify reductant in following reaction
$C_{2} O_{4}^{2 -} + {MnO}_{4}^{-} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$

1

H^{+}

2

H_{2} O

3

C_{2} O_{4}^{2 -}

4

{MnO}_{4}^{-}

Explanation:

$C_{2} O_{4}^{- 2}$ undergoes oxidation $(+ 3$ to +4 $)$ so reducing agent.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315361 Identify reductant in following reaction.
$H_{2} S + {NO}_{2} \to H_{2} O + NO + S$

1

H_{2} S

2

{NO}_{2}

3

NO

4

S

Explanation:

$H_{2} S$ undergoes oxidation $(- 2$ to 0 $)$ . So reductant.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315362 Assertion :
${Cl}_{2}$ gas bleaches the articles permanently.
Reason :
${Cl}_{2}$ is a strong reducing agent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

${Cl}_{2}$ is an effective oxidizing agent. When it comes into contact with various substances, it can cause oxidation reactions, leading to the removal of color from these materials. In the presence of moisture, ${Cl}_{2}$ exhibits its bleaching properties by oxidizing the substances. So the option (3) is correct

CHXI08:REDOX REACTIONS

315363 Which of the following acts as both oxidant and reductant?

1

{HNO}_{3}

2

{HNO}_{2}

3 Both

H N O_{3} & H N O_{2}

4 Neither

{HNO}_{3}

nor

{HNO}_{2}

Explanation:

O.N. of $N$ in ${HNO}_{2}$ is +3
Max. O.N. of $N$ is +5
Min. O.N. of $N$ is $- 3$
Thus O.N. of $N$ in ${HNO}_{2}$ can show an increase or decrease as the case may be. That is why ${HNO}_{2}$ acts as oxidant and reductant both.
O.N. of $N$ in ${HNO}_{3}$ is +5 . Hence it can act only as an oxidant.

CHXI08:REDOX REACTIONS

315364 Identify reductant in following reaction
$C_{2} O_{4}^{2 -} + {MnO}_{4}^{-} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$

1

H^{+}

2

H_{2} O

3

C_{2} O_{4}^{2 -}

4

{MnO}_{4}^{-}

Explanation:

$C_{2} O_{4}^{- 2}$ undergoes oxidation $(+ 3$ to +4 $)$ so reducing agent.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315361 Identify reductant in following reaction.
$H_{2} S + {NO}_{2} \to H_{2} O + NO + S$

1

H_{2} S

2

{NO}_{2}

3

NO

4

S

Explanation:

$H_{2} S$ undergoes oxidation $(- 2$ to 0 $)$ . So reductant.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315362 Assertion :
${Cl}_{2}$ gas bleaches the articles permanently.
Reason :
${Cl}_{2}$ is a strong reducing agent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

${Cl}_{2}$ is an effective oxidizing agent. When it comes into contact with various substances, it can cause oxidation reactions, leading to the removal of color from these materials. In the presence of moisture, ${Cl}_{2}$ exhibits its bleaching properties by oxidizing the substances. So the option (3) is correct

CHXI08:REDOX REACTIONS

315363 Which of the following acts as both oxidant and reductant?

1

{HNO}_{3}

2

{HNO}_{2}

3 Both

H N O_{3} & H N O_{2}

4 Neither

{HNO}_{3}

nor

{HNO}_{2}

Explanation:

O.N. of $N$ in ${HNO}_{2}$ is +3
Max. O.N. of $N$ is +5
Min. O.N. of $N$ is $- 3$
Thus O.N. of $N$ in ${HNO}_{2}$ can show an increase or decrease as the case may be. That is why ${HNO}_{2}$ acts as oxidant and reductant both.
O.N. of $N$ in ${HNO}_{3}$ is +5 . Hence it can act only as an oxidant.

CHXI08:REDOX REACTIONS

315364 Identify reductant in following reaction
$C_{2} O_{4}^{2 -} + {MnO}_{4}^{-} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$

1

H^{+}

2

H_{2} O

3

C_{2} O_{4}^{2 -}

4

{MnO}_{4}^{-}

Explanation:

$C_{2} O_{4}^{- 2}$ undergoes oxidation $(+ 3$ to +4 $)$ so reducing agent.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315361 Identify reductant in following reaction.
$H_{2} S + {NO}_{2} \to H_{2} O + NO + S$

1

H_{2} S

2

{NO}_{2}

3

NO

4

S

Explanation:

$H_{2} S$ undergoes oxidation $(- 2$ to 0 $)$ . So reductant.

MHTCET - 2021

CHXI08:REDOX REACTIONS

315362 Assertion :
${Cl}_{2}$ gas bleaches the articles permanently.
Reason :
${Cl}_{2}$ is a strong reducing agent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

${Cl}_{2}$ is an effective oxidizing agent. When it comes into contact with various substances, it can cause oxidation reactions, leading to the removal of color from these materials. In the presence of moisture, ${Cl}_{2}$ exhibits its bleaching properties by oxidizing the substances. So the option (3) is correct

CHXI08:REDOX REACTIONS

315363 Which of the following acts as both oxidant and reductant?

1

{HNO}_{3}

2

{HNO}_{2}

3 Both

H N O_{3} & H N O_{2}

4 Neither

{HNO}_{3}

nor

{HNO}_{2}

Explanation:

O.N. of $N$ in ${HNO}_{2}$ is +3
Max. O.N. of $N$ is +5
Min. O.N. of $N$ is $- 3$
Thus O.N. of $N$ in ${HNO}_{2}$ can show an increase or decrease as the case may be. That is why ${HNO}_{2}$ acts as oxidant and reductant both.
O.N. of $N$ in ${HNO}_{3}$ is +5 . Hence it can act only as an oxidant.

CHXI08:REDOX REACTIONS

315364 Identify reductant in following reaction
$C_{2} O_{4}^{2 -} + {MnO}_{4}^{-} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$

1

H^{+}

2

H_{2} O

3

C_{2} O_{4}^{2 -}

4

{MnO}_{4}^{-}

Explanation:

$C_{2} O_{4}^{- 2}$ undergoes oxidation $(+ 3$ to +4 $)$ so reducing agent.

MHTCET - 2021

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