Amines

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JEE Main 2025

LEVELJEE Advanced

The major products obtained from the reactions in List-II are the reactants for the named reactions mentioned in List-I. Match each entry in List-I with the appropriate entry in List-II and choose the correct options.

List-I

Hoffmann bromamide degradation reaction

(S)

Cannizzaro reaction

List-II

(1)

Toluene

(i) CrO_{2} Cl_{2} / CS_{2}, (ii) H_{3} O^{+}

(2)

Benzoic acid

(i) PCl_{5}, (ii) NH_{3}, (iii) P_{4} O_{10}, Δ

(3)

Nitrobenzene

(i) Fe, HCl, (ii) HCl, NaNO_{2} (273 - 278 K), H_{2} O

(4)

Toluene

(i) Cl_{2} / h ν, H_{2} O, (ii) Tollen’s reagent, (iii) SO_{2} Cl_{2}, (iv) NH_{3}

(5)

Aniline

(i) (CH_{3} CO)_{2} O, Pyridine, (ii) HNO_{3}, H_{2} SO_{4}, 288 K, (iii) aq. NaOH

JEE Main 2026

LEVELJEE Advanced

In the following reaction sequence, P, Q, S and T are the major products.

* Multiple Correct Options

(A)

Q on treatment with ethanol generates an aromatic aldehyde.

(B)

S gives positive phthalein dye test

(C)

P is a dinitro compound

(D)

T is a coloured compound

JEE Advanced 2020

LEVELJEE Advanced

Consider the following four compounds I, II, III, and IV. Choose the correct statement(s).

* Multiple Correct Options

(A)

(A) The order of basicity is II > I > III > IV.

(B)

(B) The magnitude of pKb difference between I and II is more than that between III and IV.

(C)

(D)

(D) Steric effect makes compound IV more basic than III.

JEE Advanced 2023

LEVELJEE Advanced

Comprehension Passage

A trinitro compound, 1, 3,5 tris-(4-nitrophenyl) benzene, on complete reaction with an excess of Sn/HCl gives major product, which on treatment with an excess of NaNO2/HCl at 0°C provides P as the product. P, upon treatment with excess of H2O at room temperature, gives the product Q. Bromination of Q in aqueous medium furnishes the product R. The compound P upon treatment with an excess of phenol under basic conditions gives the product S. The molar mass difference between compounds Q and R is 474 mol^{-1} and between compounds P and S is 172.5 g mol^{-1}.

Question 1:

The number of heteroatoms present in one molecule of R is _____. [Use: Molar mass (in g mol^{-1}): H = 1, C = 12, N = 14, O = 16, Br = 80, Cl = 35.5 Atoms other than C and H are considered as heteroatoms]

Question 2:

The total number of carbon atoms and heteroatoms present in one molecule of S is _____. [Use: Molar mass in g mol^{-1}]: H = 1, C = 12, N = 14, O = 16, Br = 80, Cl = 35.5 Atoms other than C and H are considered as heteroatoms

JEE Advanced 2015

LEVELJEE Advanced

In the following reactions, the major product W is :

In the following reaction sequence, the amount of D (in g) formed from 10 moles of acetophenone is_______. (Atomic weight in $g mol^{- 1}$ : $H = 1, C = 12, N = 14, O = 16, Br = 80$ . The yield (\%) corresponding to the product in each step is given in the parenthesis)

JEE Advanced 2021

LEVELJEE Advanced

Comprehension Passage

Reaction of x g of Sn with HCl quantitatively produced a salt. Entire amount of the salt reacted with y g of nitrobenzene in the presence of required amount of HCl to produce 1.29 g of an organic salt (quantitatively). (Use Molar masses (in

g mol^{- 1}

) of H, C, N, O, Cl and Sn as 1, 12, 14, 16, 35 and 119, respectively).

Question 1:

O

with

KMnO_{4} / H^{+}

gave

P

, which on heating with ammonia gave

Q

. The compound

Q

on treatment with

Br_{2} / NaOH

produced

R

. On strong heating,

Q

gave

S

, which on further treatment with ethyl 2-bromopropanoate in the presence of

KOH

followed by acidification, gave a compound

T

Question 1:

The compound $R$ is :

The compound $T$ is :

The major product of the following reaction is

Consider the following reaction sequence, the correct option(s) is(are)

* Multiple Correct Options

(A)

P =

H_{2} /Pd

, ethanol \quad R =

NaNO_{2} /HCl

\quad U = 1.

H_{3} PO_{2}

, 2.

KMnO_{4} - KOH

, heat

(B)

P = Sn/HCl \quad R =

HNO_{2}

(C)

U = 1.

CH_{3} CH_{2} OH

, 2.

KMnO_{4} - KOH

, heat

(D)

R =

H_{2} /Pd

, ethanol

JEE Advanced 2016

LEVELJEE Advanced

The product(s) of the following reaction sequence is(are)

Scheme 1 and 2 describe the conversion of P to Q and R to S, respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is ________.

JEE Advanced 2018

LEVELJEE Advanced

Comprehension Passage

An organic acid P (C11H12O2) can easily be oxidized to a dibasic acid which reacts with ethyleneglycol to produce a polymer dacron. Upon ozonolysis, P gives an aliphatic ketone as one of the products. P undergoes the following reaction sequences to furnish R via Q. The compound P also undergoes another set of reactions to produce S.

Question 1:

The compound R is

The compound S is

In the reaction shown below, the major product(s) formed is / are :

In the following reactions, P, Q, R, and S are the major products. The correct statement about P, Q, R, and S is

(A)

P is a primary alcohol with four carbons.

(B)

Q undergoes Kolbe's electrolysis to give an eight-carbon product.

(C)

R has six carbons and it undergoes Cannizzaro reaction.

(D)

S is a primary amine with six carbons.

JEE Advanced 2021

LEVELJEE Advanced

Correct option(s) for the following sequence of reactions is(are)

* Multiple Correct Options

(A)

Q = KNO

_{2}

, W = LiAlH

_{4}

(B)

R = benzenamine, V = KCN

(C)

Q = AgNO

_{2}

, R = phenylmethanamine

(D)

W = LiAlH

_{4}

, V = AgCN

JEE Advanced 2015

LEVELJEE Advanced

The major product of the reaction is :

Consider the reaction sequence from $P$ to $Q$ shown below. The overall yield of the major product $Q$ from $P$ is $75%$ . What is the amount in grams of $Q$ obtained from $9.3 mL$ of $P$ ? (Use density of $P = 1.00 g mL^{- 1}$ , Molar mass of $C = 12.0$ , $H = 1.0$ , $O = 16.0$ and $N = 14.0 g mol^{- 1}$ )

JEE Advanced 2018

LEVELJEE Advanced

Aniline reacts with mixed acid (conc. $HNO_{3}$ and conc. $H_{2} SO_{4}$ ) at $288 K$ to give P ( $51%$ ), Q ( $47%$ ) and R ( $2%$ ). The major product(s) the following reaction sequence is (are) :-

Ammonolysis of alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is

(A)

to remove basic impurities

(B)

to activate

NH_{3}

used in the reaction

(C)

to remove acidic impurities

(D)

to increase the reactivity of alkyl halide

JEE Main 2020

LEVELJEE Main

Consider the following reaction : The product 'X' is used

(A)

in acid base titration as an indicator

(B)

in protein estimation as an alternative to ninhydrin

(C)

as food grade colourant

(D)

in laboratory test for phenols

JEE Main 2019

LEVELJEE Main

Ethylamine ( $C_{2} H_{5} NH_{2}$ ) can be obtained from N-ethylphthalimide on treatment with

(A)

NaBH_{4}

(B)

NH_{2} NH_{2}

(C)

H_{2} O

(D)

CaH_{2}

LEVELJEE Main

Fluorobenzene ( $C_{6} H_{5} F$ ) can be synthesized in the laboratory

(A)

by heating phenol with HF and KF

(B)

from aniline by diazotisation followed by heating the diazonium salt with

HBF_{4}

(C)

by direct fluorination of benzene with

F_{2}

gas

(D)

by reacting bromobenzene with NaF solution

JEE Main 2019

LEVELJEE Main

The increasing basicity order of the following compounds is (A) $CH_{3} CH_{2} NH_{2}$ (B) $CH_{3} CH_{2} NH ∣ CH_{2} CH_{3}$ (C) $H_{3} C - N - CH_{3} ∣ CH_{3}$ (D) $Ph - N - H ∣ CH_{3}$

(A)

(D) < (C) < (B) < (A)

(B)

(A) < (B) < (C) < (D)

(C)

(A) < (B) < (D) < (C)

(D)

(D) < (C) < (A) < (B)

JEE Main 2018

LEVELJEE Advanced

The major product of the following reaction is

The major products obtained from the reactions in List-II are the reactants for the named reactions mentioned in List-I. Match each entry in List-I with the appropriate entry in List-II and choose the correct options.

List-I

List-II

In the following reaction sequence, P, Q, S and T are the major products.

Consider the following four compounds I, II, III, and IV. Choose the correct statement(s).

Comprehension Passage

The number of heteroatoms present in one molecule of R is _____. [Use: Molar mass (in g mol^{-1}): H = 1, C = 12, N = 14, O = 16, Br = 80, Cl = 35.5 Atoms other than C and H are considered as heteroatoms]

The total number of carbon atoms and heteroatoms present in one molecule of S is _____. [Use: Molar mass in g mol^{-1}]: H = 1, C = 12, N = 14, O = 16, Br = 80, Cl = 35.5 Atoms other than C and H are considered as heteroatoms

In the following reactions, the major product W is :

Comprehension Passage

The value of x is ______.

The value of y is ______.

Comprehension Passage

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The compound R is :

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The compound T is :

The major product of the following reaction is

Consider the following reaction sequence, the correct option(s) is(are)

The product(s) of the following reaction sequence is(are)

Scheme 1 and 2 describe the conversion of P to Q and R to S, respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is ________.

Comprehension Passage

The compound R is

The compound S is

In the reaction shown below, the major product(s) formed is / are :

In the following reactions, P, Q, R, and S are the major products. The correct statement about P, Q, R, and S is

Correct option(s) for the following sequence of reactions is(are)

The major product of the reaction is :

Ammonolysis of alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is

Consider the following reaction : The product 'X' is used

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Ethylamine (C2​H5​NH2​) can be obtained from N-ethylphthalimide on treatment with

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Fluorobenzene (C6​H5​F) can be synthesized in the laboratory

The major product of the following reaction is

The compound $R$ is :

The compound $T$ is :

Ethylamine ( $C_{2} H_{5} NH_{2}$ ) can be obtained from N-ethylphthalimide on treatment with

Fluorobenzene ( $C_{6} H_{5} F$ ) can be synthesized in the laboratory