jee main chemistry important questions | Organic Compounds Containing Nitrogen jee main questions FREE

Q 1 :

Given below are two statements:

Statement (I): The ${NH}_{2}$ group in Aniline is ortho and para directing and a powerful activating group.

Statement (II): Aniline does not undergo Friedel-Craft's reaction (alkylation and acylation).

In the light of the above statements, choose the most appropriate answer from the options given below: [2024]

Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is incorrect but Statement II is correct
Statement I is correct but Statement II is incorrect

1

2

3

4

(1)

Statement (I): Due to its +M effect, $- {NH}_{2}$ group increases electron density at ortho and para positions of the benzene ring and hence it is ortho and para directing for electrophilic aromatic substitution reactions.

Statement (II): Aniline forms salt with aluminium chloride, a Lewis acid, used as a catalyst in Friedel-Crafts reaction. Due to this, nitrogen of aniline acquires positive charge and hence acts as a strong deactivating group for further reaction. Hence, Aniline does not undergo Friedel-Crafts reaction (alkylation and acetylation).

Q 2 :

From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be ______ $\times 10^{- 1}$ g. [2024]

(95)

Number of moles of aniline $(n_{C_{6} H_{5} {NH}_{2}}) = \frac{Given mass}{Molar mass} = \frac{6.55}{93} mol$

Maximum 0.07 mol of acetanilide can be obtained from 0.07 mol of aniline.

Maximum amount of acetanilide = number of moles × molar

mass of acetanilide = $\frac{6.55}{93} \times 135 g = 9.5 g = 95 \times 10^{- 1} g$

Q 3 :

The product A formed in the following reaction is [2024]

1

2

3

4

(4)

Q 4 :

Identify the product (A) in the following reaction. [2024]

1

2

3

4

(4)

Q 5 :

9.3 g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ‘P’. The mass of product ‘P’ obtained is 26.4 g. The percentage yield is ______ %. [2024]

(80)

$n_{C_{6} H_{5} N H_{2}} = \frac{W_{C_{6} H_{5} N H_{2}}}{M_{C_{6} H_{5} N H_{2}}} = \frac{9.3 g}{93 {gmol}^{- 1}} = 0.1 mol$

$n_{C_{6} H_{3} B r_{3} N H_{2}} = \frac{W_{C_{6} H_{3} B r_{3} N H_{2}}}{M_{C_{6} H_{3} B r_{3} N H_{2}}} = \frac{26.4 g}{330 {gmol}^{- 1}} = 0.08 mol$

If the reaction was 100% complete, the moles of $C_{6} H_{3} {Br}_{3} {NH}_{2}$ would be 0.1 mol.

$Percentage yield of reaction = \frac{Amount of product formed}{Amount of product expected for 100% yield} \times 100$

$= \frac{0.08}{0.1} \times 100 = 80 %$

Q 6 :

9.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is _______ g. (nearest integer) [2024]

(20)

$n_{aniline} = \frac{Given mass}{Molar mass} = \frac{9.3 g}{93 g m o l^{- 1}} = 0.1 m o l$

$n_{dye} = n_{aniline} = 0.1 m o l$

$W_{dye} = n_{dye} \times M_{dye} = 0.1 m o l \times 198 g m o l^{- 1} = 19.8 g \approx 20 g$

Q 7 :

If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ g. (nearest integer)
(consider complete conversion) [2024]

(591)

Number of moles of aniline $(n_{C_{6} H_{5} {NH}_{2}})$

$= \frac{Given mass}{Molar mass} = \frac{279 g}{93 {g mol}^{- 1}} = 3 mol$

$C_{6} H_{5} N_{2} C_{6} H_{4} {NH}_{2}$

$M = (12 \times 12) + (3 \times 14) + (14 \times 1) + (11 \times 1) = 197$

Moles of yellow dye = moles of aniline = 3 mol

Mass of yellow dye = number of moles × molar mass

$= 3 mol \times 197 {g mol}^{- 1} = 591 g$

Q 8 :

For reaction

The correct order of set of reagents for the above conversion is: [2025]

${Br}_{2} | {FeBr}_{3}, H_{2} O (Δ), NaOH$
$H_{2} {SO}_{4}, {Ac}_{2} O, {Br}_{2}, H_{2} O (Δ), NaOH$
${Ac}_{2} O, {Br}_{2}, H_{2} O (Δ), NaOH$
${Ac}_{2} O, H_{2} {SO}_{4}, {Br}_{2}, NaOH$

1

2

3

4

(2)

Q 9 :

The sequence from the following that would result in giving predominantly 3, 4, 5-tribromoaniline is: [2025]

1

2

3

4

(3)

Q 10 :

Consider the following sequence of reactions:

11.25 mg of chlorobenzene will produce ---- $\times 10^{- 1}$ mg of product B.

(Consider the reactions result in complete conversion.)

[Given molar mass of C, H, O, N and Cl as 12, 1, 16, 14 and 35.5 g ${mol}^{- 1}$ respectively] [2025]

(93)

Moles of chlorobenzene $(n_{C_{6} H_{5} Cl})$ = $\frac{W_{C_{6} H_{5} Cl}}{M_{C_{6} H_{5} Cl}}$

$= \frac{11.25 \times 10^{- 3}}{112.5} mol = 10^{- 4} mol$

Moles of B = $n_{C_{6} H_{5} Cl} = 10^{- 4}$ mol

$Mass of B = moles of B \times molar mass of B = 10^{- 4} \times 93 g$

$= 93 \times 10^{- 1} mg$

Q 11 :

Given below are two statements:

Statement I: Pure aniline and other arylamines are usually colourless.

Statement II: Arylamines get coloured on storage due to atmospheric reduction.

In the light of the above statements, choose the most appropriate answer from the options given below: [2023]

Both Statements I and Statements II are correct
Statements I is incorrect but Statements II is correct
Both Statements I and Statements II are incorrect
Statements I is correct but Statements II is incorrect

1

2

3

4

(4)

Arylamines get coloured due to atmospheric oxidation.

Q 12 :

Compound A from the following reaction sequence is: [2023]

Salicylic acid
Phenol
Benzoic acid
Aniline

1

2

3

4

(4)

Q 13 :

Identify X in the sequence given:

1

2

3

4

(1)

Q 14 :

Which of the following process will produce 2° amine?

Gabriel synthesis
Hoffmann bromamide reaction
Reduction of carbylamines
Reduction of nitro compounds

1

2

3

4

(3)

Reduction of RNC will produce $R - NH - {CH}_{3}$ .

Topic Question Set

Q 2 :

From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be ______ $\times 10^{- 1}$ g. [2024]

Q 3 :

The product A formed in the following reaction is [2024]

Q 4 :

Identify the product (A) in the following reaction. [2024]

Q 5 :

9.3 g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ‘P’. The mass of product ‘P’ obtained is 26.4 g. The percentage yield is ______ %. [2024]

Q 6 :

9.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is _______ g. (nearest integer) [2024]

Q 7 :

If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ g. (nearest integer)
(consider complete conversion) [2024]

Q 8 :

For reaction

The correct order of set of reagents for the above conversion is: [2025]

Q 9 :

The sequence from the following that would result in giving predominantly 3, 4, 5-tribromoaniline is: [2025]

Q 10 :

Consider the following sequence of reactions:

11.25 mg of chlorobenzene will produce ---- $\times 10^{- 1}$ mg of product B.

(Consider the reactions result in complete conversion.)

[Given molar mass of C, H, O, N and Cl as 12, 1, 16, 14 and 35.5 g ${mol}^{- 1}$ respectively] [2025]

Q 12 :

Compound A from the following reaction sequence is: [2023]

Q 13 :

Identify X in the sequence given:

Q 14 :

Which of the following process will produce 2° amine?

Want Us to Email you About Special Offers & Updates?

Topic Question Set

Q 2 : From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be ______ ×10-1 g. [2024]

Q 3 : The product A formed in the following reaction is [2024]

Q 4 : Identify the product (A) in the following reaction. [2024]

Q 5 : 9.3 g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ‘P’. The mass of product ‘P’ obtained is 26.4 g. The percentage yield is ______ %. [2024]

Q 6 : 9.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is _______ g. (nearest integer) [2024]

Q 7 : If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ g. (nearest integer) (consider complete conversion) [2024]

Q 8 : For reaction The correct order of set of reagents for the above conversion is: [2025]

Q 9 : The sequence from the following that would result in giving predominantly 3, 4, 5-tribromoaniline is: [2025]

Q 10 : Consider the following sequence of reactions: 11.25 mg of chlorobenzene will produce ---- ×10-1 mg of product B. (Consider the reactions result in complete conversion.) [Given molar mass of C, H, O, N and Cl as 12, 1, 16, 14 and 35.5 g mol-1 respectively] [2025]

Q 11 : Given below are two statements: Statement I: Pure aniline and other arylamines are usually colourless. Statement II: Arylamines get coloured on storage due to atmospheric reduction. In the light of the above statements, choose the most appropriate answer from the options given below: [2023]

Q 12 : Compound A from the following reaction sequence is: [2023]

Q 13 : Identify X in the sequence given:

Q 14 : Which of the following process will produce 2° amine?

Want Us to Email you About Special Offers & Updates?

Q 2 :

From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be ______ $\times 10^{- 1}$ g. [2024]

Q 3 :

The product A formed in the following reaction is [2024]

Q 4 :

Identify the product (A) in the following reaction. [2024]

Q 5 :

9.3 g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ‘P’. The mass of product ‘P’ obtained is 26.4 g. The percentage yield is ______ %. [2024]

Q 6 :

9.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is _______ g. (nearest integer) [2024]

Q 7 :

If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ g. (nearest integer)
(consider complete conversion) [2024]

Q 8 :

For reaction

The correct order of set of reagents for the above conversion is: [2025]

Q 9 :

The sequence from the following that would result in giving predominantly 3, 4, 5-tribromoaniline is: [2025]

Q 10 :

Consider the following sequence of reactions:

11.25 mg of chlorobenzene will produce ---- $\times 10^{- 1}$ mg of product B.

(Consider the reactions result in complete conversion.)

[Given molar mass of C, H, O, N and Cl as 12, 1, 16, 14 and 35.5 g ${mol}^{- 1}$ respectively] [2025]

Q 12 :

Compound A from the following reaction sequence is: [2023]

Q 13 :

Identify X in the sequence given:

Q 14 :

Which of the following process will produce 2° amine?