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Isomerism

JEE Main 2025 (Online) 22nd January Morning ShiftMCQEasy📈 Topic in 5% papers+4−1
Ques. 1JEE Main 2025, 22 January (Morning Shift)

How many different stereoisomers are possible for the given molecule? [figure]

  1. 2
  2. 1
  3. 3
  4. 4

Answer

(4) 4

Solution

CH3-CH(OH)-CH=CH-CH3: one chiral centre (C-2) and one stereogenic double bond (C-3=C-4).

2 2 = 4 stereoisomers:

[figure]

[figure]

Answer: (4)

Keep practising — Isomerism

Ques. 2JEE Main 2025, 22 January (Morning Shift)

The incorrect statements regarding geometrical isomerism are : Choose the correct answer from the options given below :

  1. A and E Only
  2. A, D and E Only
  3. C, D and E Only
  4. B and C Only

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