Question

Find out the statements which are not true.
A. Resonating structures with more covalent bonds and less charge separation are more stable.
B. In electromeric effect, an unsaturated system shows +E effect with nucleophile and –E effect with electrophile.
C. Inductive effect is responsible for high melting point, boiling point and dipole moment of polar compounds.
D. The greater the number of alkyl groups attached to the doubly bonded carbon atoms, higher is the heat of hydrogenation.
E. Stability of carbanion increases with increase in s-character of the carbon carrying negative charge.

• A. B, D & E only
• B. A, D & E only
• C. B & D only
• D. A, C & D only

Hint:

Lower heat of hydrogenation indicates higher alkene stability.

Answer 1

The Correct Option is C

Step 1: Checking statement B.
Electromeric effect shows +E with electrophile and –E with nucleophile. Hence B is false.
Step 2: Checking statement D.
More substituted alkenes are more stable and have lower heat of hydrogenation. Hence D is false.
Step 3: Other statements.
A, C and E are correct statements.