Question

Statement-I: Buta-1,3-diene is less stable than Penta-1, 4-diene.
Because
Statement-II: Buta-1,3-diene has a greater number of resonating structures and the delocalized electron cloud.

• A. Statement-I is True, Statement-II is True ; Statement-II is a correct explanation for Statement-I
• B. Statement-I is True, Statement-II is True ; Statement-II is NOT a correct explanation for Statement-I
• C. Statement-I is True, Statement-II is False
• D. Statement-I is False, Statement-II is True

Answer 1

The correct option is D Statement-I is False, Statement-II is True

Buta-1,3-diene is more stable than Penta-1, 4-diene because Buta-1,3-diene has greater number of resonating structures and delocalised electron cloud.
In Buta-1,3-diene, two double bonds are conjugated and in Penta-1, 4-diene, the two double bonds are non conjugated.
Thus, statement-I is False, Statement-II is True.