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CHXI08:REDOX REACTIONS

315167 Assertion :
Oxidation state of carbon in $C_{6} H_{12} O_{6}$ is zero
Reason :
Oxidation state of carbon in all organic compounds is zero

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.

CHXI08:REDOX REACTIONS

315168 Oxidation number of $C$ in $HNC$ is

1

+ 2

2

- 3

3

+ 3

4 Zero

Explanation:

$1 + (- 3) + a = 0$
$∴ a = + 2$

CHXI08:REDOX REACTIONS

315224 The oxidation state of chlorine in ${KClO}_{4}$ is

1 -1

2 +1

3 +7

4 -7

Explanation:

${KClO}_{4}$ Let the oxidation state of $Cl$ be $x$ .
$\begin{array}{l} 1 + x + 4 (- 2) = 0 \\ 1 + x - 8 = 0 \\ x - 7 = 0 \\ x = + 7 \end{array}$

CHXI08:REDOX REACTIONS

315290 Which of the following is not an example of redox reaction?

1

CuO + H_{2} ⟶ Cu + H_{2} O

2

{Fe}_{2} O_{3} + 3 CO ⟶ 2 Fe + 3 {CO}_{2}

3

2 K + F_{2} ⟶ 2 KF

4

{BaCl}_{2} + H_{2} {SO}_{4} ⟶ {BaSO}_{4} + HCl

NCERT Exemplar

CHXI08:REDOX REACTIONS

315167 Assertion :
Oxidation state of carbon in $C_{6} H_{12} O_{6}$ is zero
Reason :
Oxidation state of carbon in all organic compounds is zero

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.

CHXI08:REDOX REACTIONS

315168 Oxidation number of $C$ in $HNC$ is

1

+ 2

2

- 3

3

+ 3

4 Zero

Explanation:

$1 + (- 3) + a = 0$
$∴ a = + 2$

CHXI08:REDOX REACTIONS

315224 The oxidation state of chlorine in ${KClO}_{4}$ is

1 -1

2 +1

3 +7

4 -7

Explanation:

${KClO}_{4}$ Let the oxidation state of $Cl$ be $x$ .
$\begin{array}{l} 1 + x + 4 (- 2) = 0 \\ 1 + x - 8 = 0 \\ x - 7 = 0 \\ x = + 7 \end{array}$

CHXI08:REDOX REACTIONS

315290 Which of the following is not an example of redox reaction?

1

CuO + H_{2} ⟶ Cu + H_{2} O

2

{Fe}_{2} O_{3} + 3 CO ⟶ 2 Fe + 3 {CO}_{2}

3

2 K + F_{2} ⟶ 2 KF

4

{BaCl}_{2} + H_{2} {SO}_{4} ⟶ {BaSO}_{4} + HCl

NCERT Exemplar

CHXI08:REDOX REACTIONS

315167 Assertion :
Oxidation state of carbon in $C_{6} H_{12} O_{6}$ is zero
Reason :
Oxidation state of carbon in all organic compounds is zero

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.

CHXI08:REDOX REACTIONS

315168 Oxidation number of $C$ in $HNC$ is

1

+ 2

2

- 3

3

+ 3

4 Zero

Explanation:

$1 + (- 3) + a = 0$
$∴ a = + 2$

CHXI08:REDOX REACTIONS

315224 The oxidation state of chlorine in ${KClO}_{4}$ is

1 -1

2 +1

3 +7

4 -7

Explanation:

${KClO}_{4}$ Let the oxidation state of $Cl$ be $x$ .
$\begin{array}{l} 1 + x + 4 (- 2) = 0 \\ 1 + x - 8 = 0 \\ x - 7 = 0 \\ x = + 7 \end{array}$

CHXI08:REDOX REACTIONS

315290 Which of the following is not an example of redox reaction?

1

CuO + H_{2} ⟶ Cu + H_{2} O

2

{Fe}_{2} O_{3} + 3 CO ⟶ 2 Fe + 3 {CO}_{2}

3

2 K + F_{2} ⟶ 2 KF

4

{BaCl}_{2} + H_{2} {SO}_{4} ⟶ {BaSO}_{4} + HCl

NCERT Exemplar

CHXI08:REDOX REACTIONS

315167 Assertion :
Oxidation state of carbon in $C_{6} H_{12} O_{6}$ is zero
Reason :
Oxidation state of carbon in all organic compounds is zero

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.

CHXI08:REDOX REACTIONS

315168 Oxidation number of $C$ in $HNC$ is

1

+ 2

2

- 3

3

+ 3

4 Zero

Explanation:

$1 + (- 3) + a = 0$
$∴ a = + 2$

CHXI08:REDOX REACTIONS

315224 The oxidation state of chlorine in ${KClO}_{4}$ is

1 -1

2 +1

3 +7

4 -7

Explanation:

${KClO}_{4}$ Let the oxidation state of $Cl$ be $x$ .
$\begin{array}{l} 1 + x + 4 (- 2) = 0 \\ 1 + x - 8 = 0 \\ x - 7 = 0 \\ x = + 7 \end{array}$

CHXI08:REDOX REACTIONS

315290 Which of the following is not an example of redox reaction?

1

CuO + H_{2} ⟶ Cu + H_{2} O

2

{Fe}_{2} O_{3} + 3 CO ⟶ 2 Fe + 3 {CO}_{2}

3

2 K + F_{2} ⟶ 2 KF

4

{BaCl}_{2} + H_{2} {SO}_{4} ⟶ {BaSO}_{4} + HCl

NCERT Exemplar

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