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But-2-yne is reacted separately with one mole of Hydrogen as shown below B —Na / liq NH3→ CH3–C≡C–CH3 —Pd/C, Δ→ A +H2 (A) A is more than soluble than B. (B) The boiling point & melting point of A are higher and lower than B respectively. (C) A is more polar than B because dipole moment of A is zero. (D) Br2 adds easily to B than A. Identify the incorrect statements from the option given below

1. A, C & D only
2. B, C & D only
3. B and C only
4. A and B only

Correct answer: B, C & D only

Solution

Options B, C, and D are incorrect because A is a more stable alkane with higher boiling and melting points than B, which is an alkyne. Additionally, A is less polar than B due to its symmetrical structure, resulting in a zero dipole moment, and the addition of Br2 is more favorable to the more reactive alkyne B than the alkane A.

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