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Amines

JEE Main 2026 (Online) 2nd April Morning ShiftMCQHard📈 Topic in 24% papers+4−1
Ques. 1JEE Main 2026, 2 April (Morning Shift)

Consider the three aromatic molecules (P, Q and R) whose structures have been given below : [figure] The correct order regarding the reactivity of these compounds with Ph- N N Cl under optimum but slightly acidic medium is :

  1. P > Q > R
  2. R > P > Q
  3. R > Q > P
  4. P > R > Q

Answer

(1) P > Q > R

Solution

The diazonium ion is a weak electrophile; it couples (at the para position) only with strongly activated rings such as N,N-dimethylaniline.

Activation comes from the +R effect of -NMe2, which needs the lone-pair orbital of N parallel to the ring p orbitals, i.e. the -NMe2 group in the plane of the ring.

P: no ortho substituent ⇒ -NMe2 is coplanar, full +R ⇒ most reactive.

Q: one ortho –Me clashes with the N-methyl groups ⇒ -NMe2 twists partly out of the plane (steric inhibition of resonance) ⇒ less activated.

R: two ortho –Me groups ⇒ -NMe2 is pushed almost perpendicular to the ring ⇒ resonance is nearly lost ⇒ least reactive.

∴ Reactivity towards coupling: P > Q > R

Answer: (1)

Keep practising — Amines

Ques. 2JEE Main 2026, 2 April (Evening Shift)

Identify compounds A and E in the following reaction sequence. [figure]

  1. A = [figure] E = [figure]
  2. A = [figure] E = [figure]
  3. A = [figure] E = [figure]
  4. A = [figure] E = [figure]
Ques. 3JEE Main 2026, 2 April (Evening Shift)

Consider the following reactions sequence [figure] When the product (P) is subjected to Carius analysis using AgNO3, 1.0 g of the product (P) will produce g of the precipitate of AgBr. (Nearest Integer) (Given : molar mass in g mol-1 C : 12, H : 1, O : 16, N : 14, Br : 80, Ag : 108)

Ques. 4JEE Main 2026, 28 January (Morning Shift)

Consider the following reactions giving major product. Identify the correct reaction.

  1. [figure]
  2. [figure]
  3. [figure]
  4. H3CCH2- O \|C-NH2 + Br2 + 4 KOH (alc) H3CCH2NH2 + 2KBr + K2CO3 + 2H2O
Ques. 5JEE Main 2026, 28 January (Evening Shift)

A student performed analysis of an aliphatic organic compound 'X' which on analysis gave C = 61.01%, H = 15.25%, N = 23.74%. This compound, on treatment with HNO2/H2O, produced another compound 'Y' which did not contain any nitrogen atom. However, the compound 'Y' upon controlled oxidation produced another compound 'Z' that responded to iodoform test. The structure of 'X' is :

  1. CH3-CH2CH(NH2)-CH3
  2. CH3CH2CH2NH2
  3. Ph-CH(CH3)-NH2
  4. [figure]
Ques. 6JEE Main 2026, 28 January (Evening Shift)

Total number of alkali-insoluble solid sulphonamides obtained by reaction of given amines with Hinsberg's reagent is . Aniline, N-Methylaniline, Methanamine, N,N-Dimethylmethanamine, N-Methylmethanamine, Phenylmethanamine, N-Propylaniline, N-Phenylaniline, N,N-Dimethylaniline, Allylamine, Isopropylamine

  1. 8
  2. 5
  3. 2
  4. 4
Ques. 7JEE Main 2026, 24 January (Morning Shift)

The correct stability order of the following diazonium salts is [figure]

  1. C > D > B > A
  2. A > C > D > B
  3. A > B > C > D
  4. C > A > D > B
Ques. 8JEE Main 2026, 24 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are false
  2. Statement I is false but Statement II is true
  3. Statement I is true but Statement II is false
  4. Both Statement I and Statement II are true
Ques. 9JEE Main 2026, 23 January (Morning Shift)

Consider the following sequence of reactions. [figure] Assuming that the reaction proceeds to completion, then 137 mg of 4-nitrotoluene will produce mg of B. (Given molar mass in g mol-1 H : 1, C : 12, N : 14, O : 16, Br : 80)

  1. 208
  2. 228
  3. 146
  4. 301
Ques. 10JEE Main 2026, 23 January (Morning Shift)

Compound 'P' undergoes the following sequence of reactions : [figure] 'P' is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 11JEE Main 2026, 23 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are true
  2. Statement I is false but Statement II is true
  3. Statement I is true but Statement II is false
  4. Both Statement I and Statement II are false

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