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Organic Chemistry – Some Basic Principles and Techniques

JEE Main 2026 (Online) 4th April Evening ShiftMatchingEasy📈 Topic in 3% papers+4−1
Ques. 1JEE Main 2026, 4 April (Evening Shift)

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

  1. A-III, B-I, C-II, D-IV
  2. A-III, B-IV, C-II, D-I
  3. A-III, B-IV, C-I, D-II
  4. A-I, B-III, C-IV, D-II

Answer

(3) A-III, B-IV, C-I, D-II

Solution

A. Williamson synthesis: R-X + R'-O-Na+ R-O-R' + NaX; the alkoxide ion (nucleophile) displaces X- by SN2 ⇒ nucleophilic substitution (III)

B. Friedel–Crafts reaction: the electrophile (R+ or RCO+, formed with anhydrous AlCl3) replaces an H of the benzene ring ⇒ electrophilic substitution (IV)

C. Bromination of vinyl benzene (styrene): Br2 adds across the side-chain C=C ⇒ C6H5CHBr-CH2Br ⇒ electrophilic addition (I)

D. Chlorination of toluene in light: chlorine free radicals replace the side-chain H ⇒ C6H5CH2Cl (then C6H5CHCl2, C6H5CCl3) ⇒ free radical substitution (II)

∴ A-III, B-IV, C-I, D-II

Answer: (3)

Keep practising — Organic Chemistry – Some Basic Principles and Techniques

Ques. 2JEE Main 2026, 4 April (Evening Shift)

Consider the following molecules/species : [figure] The correct order of carbon-oxygen double bond length is :

  1. x > y > z
  2. y > z > x
  3. z > x > y
  4. x > z > y
Ques. 3JEE Main 2026, 4 April (Evening Shift)

The descending order of acidity among the following compounds is : [figure] Choose the correct answer from the options given below :

  1. B > D > E > A > C
  2. D > B > E > A > C
  3. C > A > B > D > E
  4. D > E > B > A > C
Ques. 4JEE Main 2026, 4 April (Evening Shift)

The strongest conjugate acid will result from:

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 5JEE Main 2026, 2 April (Morning Shift)

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

  1. -CONH2, >C=O, -CHO, -NH2, -C C-
  2. -CONH2, -COOCH3, -CHO, -NH2, -OH
  3. -CONH2, -CHO, >C=O, -NH2, -C C-
  4. -CONH2, -CHO, -CN, -NH2, -C C-
Ques. 6JEE Main 2026, 2 April (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. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
Ques. 7JEE Main 2026, 28 January (Morning Shift)

CORRECT order of stability for the following is CH2=CH-, CH3-CH2-, CH C-

  1. CH C- > CH3-CH2- > CH2=CH-
  2. CH2=CH- > CH C- > CH3-CH2-
  3. CH C- > CH2=CH- > CH3-CH2-
  4. CH3-CH2- > CH2=CH- > CH C-
Ques. 8JEE Main 2026, 28 January (Evening Shift)

The cyclic cations having the same number of hyperconjugation are : Choose the correct answer from the options given below :

  1. B and C Only
  2. A and B Only
  3. A and C Only
  4. A, C and D Only
Ques. 9JEE Main 2026, 24 January (Morning Shift)

Arrange the following alkenes in decreasing order of stability. [figure] Choose the correct answer from the options given below:

  1. III > I > II > IV
  2. III > II > I > IV
  3. I > III > II > IV
  4. I > III > IV > II
Ques. 10JEE Main 2026, 24 January (Morning Shift)

Arrange the following carbanions in the decreasing order of stability. I. p-Br-C6H4- CH2 II. C6H5- CH2 III. p-CH3O-C6H4- CH2 IV. p-CHO-C6H4- CH2 V. p-CH3-C6H4- CH2 Choose the correct answer from the options given below :

  1. I > II > IV > V > III
  2. IV > II > I > III > V
  3. I > IV > II > V > III
  4. IV > I > II > V > III
Ques. 11JEE Main 2026, 24 January (Evening Shift)

Find out the statements which are not true. Choose the correct answer from the options given below :

  1. A, D & E only
  2. A, C & D only
  3. B & D only
  4. B, D & E only

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