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JEE Advanced > Redox Reactions

Explore popular questions from Redox Reactions for JEE Advanced. This collection covers Redox Reactions previous year JEE Advanced questions hand picked by experienced teachers.

Q 1.

Correct4

Incorrect-1

The reagent with which both acetaldehyde and acetone react easily is:

A

Tollens reagent

B

Schiffs reagent

Grignard reagent

D

Fehling's solution

Explanation

Q 2.

Correct4

Incorrect-1


The compound (C) is:

B

C

D

Explanation

Q 3.

Correct4

Incorrect-1

A metal ion {tex} \mathrm M^ { 3 + } {/tex} loses three electrons; its oxidation number will be

A

{tex} + 3 {/tex}

{tex} + 6 {/tex}

C

{tex}0{/tex}

D

{tex} - 3 {/tex}

Explanation

Q 4.

Correct4

Incorrect-1


The Product (A) is:

A

B

D

Explanation

Q 5.

Correct4

Incorrect-1

{tex} a \mathrm { K } _ { 2 } \mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } +b \mathrm { KCl } + c\mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } \rightarrow x \mathrm { CrO } _ { 2 } \mathrm { Cl } _ { 2 } + y \mathrm { KHSO } _ { 4 } + \mathrm { zH } _ { 2 } \mathrm { O } {/tex}
The above equation balanced when

A

{tex} a = 2 , b = 4 , c = 6 {/tex} and {tex} x = 2 , y = 6 , z = 3 {/tex}

B

{tex} a = 4 , b = 2 , c = 6 {/tex} and {tex} x = 6 , y = 2 , z = 3 {/tex}

C

{tex} a = 6 , b = 4 , c = 2 {/tex} and {tex} x = 6 , y = 3 , z = 2 {/tex}

{tex} a = 1 , b = 4 , c = 6 {/tex} and {tex} x = 2 , y = 6 , z = 3 {/tex}

Explanation

Q 6.

Correct4

Incorrect-1


The product (A)and (B) are:

B

C

D

None

Explanation

Q 7.

Correct4

Incorrect-1

Which of the following is a redox reaction?

A

{tex} \mathrm { NaCl } + \mathrm { KNO } _ { 3 } \rightarrow \mathrm { NaNO } _ { 3 } + \mathrm { KCl } {/tex}

B

{tex} \mathrm { CaC } _ { 2 } \mathrm { O } _ { 4 } + 2 \mathrm { HCl } \rightarrow \mathrm { CaCl } _ { 2 } + \mathrm { H } _ { 2 } \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } {/tex}

C

{tex} \mathrm { Mg } ( \mathrm { OH } ) _ { 2 } + 2 \mathrm { NH } _ { 4 } \mathrm { Cl } \rightarrow \mathrm { MgCl } _ { 2 } + 2 \mathrm { NH } _ { 4 } \mathrm { OH } {/tex}

{tex} \mathrm { Zn } + 2 \mathrm { AgCN } \rightarrow 2 \mathrm { Ag } + \mathrm { Zn } ( \mathrm { CN } ) _ { 2 } {/tex}

Explanation

Q 8.

Correct4

Incorrect-1

When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation
{tex} x \mathrm { Cu } + y \mathrm { HNO } _ { 3 } \rightarrow \mathrm { Cu } \left( \mathrm { NO } _ { 3 } \right) _ { 2 } + \mathrm { NO } + \mathrm { NO } _ { 2 } + \mathrm { H } _ { 2 } \mathrm { O } {/tex}
The coefficients {tex} x {/tex} and {tex} y {/tex} are

A

2 and 3

2 and 6

C

1 and 3

D

3 and 8

Explanation

Q 9.

Correct4

Incorrect-1

For the redox reaction
{tex} x \mathrm { MnO } _ { 4 } ^ { \ominus } + y \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { 2 - } + \mathrm { zH } ^ { \oplus } \rightarrow \mathrm { Mn } ^ { 2 + } + \mathrm { CO } _ { 2 } + \mathrm { H } _ { 2 } \mathrm { O } {/tex}
the coefficients {tex} x , y , {/tex} and {tex} z {/tex} are

{tex} 2,5,16 {/tex}

B

{tex} 16,5,2 {/tex}

C

{tex} 5,16,2 {/tex}

D

{tex} 2,16,5 {/tex}

Explanation

Q 10.

Correct4

Incorrect-1

The number of moles of {tex} \mathrm { KMnO } _ { 4 } {/tex} required to oxidize {tex} 1 \mathrm { mol } {/tex} of {tex} \mathrm { Fe } \left( \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } \right) {/tex} in acidic medium is

0.6

B

1.67

C

0.2

D

0.4

Explanation