Question

Match List-I with List-II

List-I (Method of Preparation)	List-II (Approach)
(A) Sol-gel Synthesis	(I) Top down
(B) Ball milling	(II) Bottom up
(C) Laser ablation	(III) Bottom up
(D) Nano-Lithography	(IV) Top down

Choose the correct answer from the options given below:

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

Hint:

Bottom-up approaches build from atoms/molecules, while top-down approaches remove material. Examples: Sol-gel (Bottom-up), Ball Milling (Top-down).

Answer 1

The Correct Option is A

From preparation methods:
- (A) Sol-gel synthesis: Bottom-up.
- (B) Ball milling: Top-down.
- (C) Laser ablation: Bottom-up.
- (D) Nano-lithography: Top-down.