Question

Match List I with List II

List I (Crystalline Solids)	List II (Examples)
(A). Ionic Solid	(I). \(\text{CO}_{2}\)
(B). Covalent Solid	(II). \(\text{K}_{2}\text{SO}_{4}\)
(C). Molecular Solid	(III). K
(D). Metallic Solid	(IV). Quartz

Choose the correct answer from the options given below:

• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (I), (C) - (IV), (D) - (II)

Hint:

K2SO4 is ionic, quartz is a covalent network solid, CO2 (dry ice) is molecular and K is metallic.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
Classify each example by the forces that hold the solid together.

Step 2: Matching
(A) Ionic solid: \(\text{K}_2\text{SO}_4\), (II).
(B) Covalent solid: quartz, (IV), a giant network of Si-O bonds.
(C) Molecular solid: solid \(\text{CO}_2\), (I), separate molecules with weak forces.
(D) Metallic solid: K, (III), positive ions in a sea of electrons.

Step 3: Compare the options
The set (A)-(II), (B)-(IV), (C)-(I), (D)-(III) is option (A).

Final Answer:
The correct matching is (A)-(II), (B)-(IV), (C)-(I), (D)-(III). \[ \boxed{\text{(A) }\text{(A)-(II), (B)-(IV), (C)-(I), (D)-(III)}} \]