Multiple choice

Assertion: The potential energy barrier for rotation about C=C bond in 2-butene is much higher than that in ethylene. Reason: Hyperconjugation effect decreases the double bond character.

  1. Both A and R are true and R is the correct explanation of A.

  2. Both A and R are true but R is NOT the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.

  5. Both A and R are false.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct,  because the potential energy barrier for rotation about C=C bond in 2-butene is much lower (75.3 kJ/mole) than that in ethylene (167.4 kJ/mole).

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