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Organic Chemistry – Some Basic Principles and Techniques

JEE Main 2024 (Online) 29th January Morning ShiftNumericalEasy📈 Topic in 5% papers+4
Ques. 1JEE Main 2024, 29 January (Morning Shift)

Number of compounds among the following which contain sulphur as heteroatom is . Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine

Answer

2

Solution

Heteroatom present: Furan – O; Pyridine – N; Pyrrole – N; Tyrosine – N, O (no S)

Thiophene [figure] – S in the ring ✓

Cysteine (HS–CH2–CH(NH2)–COOH) – S in –SH ✓

Answer: 2

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Ques. 2JEE Main 2024, 29 January (Evening Shift)

According to IUPAC system, the compound [figure] is named as

  1. Cyclohex-2-en-1-ol
  2. 1-Hydroxyhex-2-ene
  3. Cyclohex-1-en-3-ol
  4. Cyclohex-1-en-2-ol
Ques. 3JEE Main 2024, 29 January (Evening Shift)

The ascending acidity order of the following H atoms is [figure]

  1. A < B < D < C
  2. A < B < C < D
  3. D < C < B < A
  4. C < D < B < A
Ques. 4JEE Main 2024, 29 January (Evening Shift)

The total number of 'Sigma' and 'Pi' bonds in 2-formylhex-4-enoic acid is .

Ques. 5JEE Main 2024, 27 January (Morning Shift)

Which of the following is strongest Bronsted base?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 6JEE Main 2024, 27 January (Morning Shift)

Which of the following has highly acidic hydrogen?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7JEE Main 2024, 27 January (Morning Shift)

Cyclohexene [figure] is type of an organic compound.

  1. Benzenoid aromatic
  2. Benzenoid non-aromatic
  3. Acyclic
  4. Alicyclic
Ques. 8JEE Main 2024, 27 January (Morning Shift)

IUPAC name of following compound (P) is: [figure]

  1. 1-Ethyl-5,5-dimethylcyclohexane
  2. 3-Ethyl-1,1-dimethylcyclohexane
  3. 1-Ethyl-3,3-dimethylcyclohexane
  4. 1,1-Dimethyl-3-ethylcyclohexane
Ques. 9JEE Main 2024, 27 January (Morning Shift)

Among the given organic compounds, the total number of aromatic compounds is [figure]

Ques. 10JEE Main 2024, 27 January (Evening Shift)

The order of relative stability of the contributing structure is : [figure] Choose the correct answer from the options given below :

  1. I = II = III
  2. I > II > III
  3. III > II > I
  4. II > I > III
Ques. 11JEE Main 2024, 27 January (Evening Shift)

Bond line formula of HOCH(CN)2 is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

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