Question

Match List-I with List-II :

is reached with regents is List-I to from products in List-II.

	List-I (Reagent)		List-II (Products)
A		I
B	HBF4 \(\triangle\)	II
C	Cu, HCI	III
D	CuCN/ KCN	IV

Choose the correct answer from the options given below :

• A. A-IV, B-III, C-II, D-I
• B. A-III, B-I, C-IV, D-II
• C. A-I, B-III, C-IV, D-II
• D. A-III, B-I, C-II, D-IV

Answer 1

The Correct Option is B

To solve the given problem, we need to match reagents in List-I with their respective products in List-II. Let's analyze the chemical reactions that involve each reagent and identify the corresponding product.

1. A: (Benzene diazonium chloride) reacts with copper and hydrochloric acid (Cu, HCl) to form chlorobenzene.

   

   This matches with Option III.
2. B: When reacted with HBF₄ and heat (\(\triangle\)), benzene diazonium chloride yields fluorobenzene.

   

   This matches with Option I.
3. C: Diazotization involving Cu and HCl generally provides chlorobenzene. However, when CuCN or KCN is used, the reaction forms benzonitrile.

   

   This matches with Option IV.
4. D: CuCN/KCN reactions with benzene diazonium chloride yield benzonitrile.

   

   This matches with Option II.

According to the analysis, the correct matching is: A-III, B-I, C-IV, D-II.

Therefore, the correct answer is A-III, B-I, C-IV, D-II.