Question

Match List-I with List-II

List-I (Rock)	List-II (Mineral/Rock Type)
(A) Igneous rock	(I) Volcanic ash
(B) Marine sedimentary rock	(II) Granite
(C) Metamorphic rock	(III) Limestone
(D) Terrestrial sedimentary rock	(IV) Gneiss

Choose the correct answer from the options given below.

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

Hint:

Granite is always Igneous, Gneiss is always Metamorphic, and Limestone is always Sedimentary. Matching these three will quickly solve almost any rock-classification matrix.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept: 
Rocks are geologically classified into three major groups—igneous, sedimentary, and metamorphic—based on their mode of origin and formation environment. 

Step 2: Detailed Explanation: 
Let us match each rock group with its correct example: 
- (A) Igneous rock: Granite is a classic intrusive plutonic igneous rock formed by the slow cooling of magma, so (A) matches with (II). 
- (B) Marine sedimentary rock: Limestone is primarily composed of calcium carbonate formed in marine environments from the accumulation of organic shells, so (B) matches with (III). 
- (C) Metamorphic rock: Gneiss is a high-grade metamorphic rock characterized by distinct bands, formed by the alteration of granite or sedimentary rocks, so (C) matches with (IV). 
- (D) Terrestrial sedimentary rock: Volcanic ash is an unconsolidated pyroclastic material deposited on land, which can lithify into sedimentary tuff, so (D) matches with (I). 
This yields the correct sequence: (A)-(II), (B)-(III), (C)-(IV), (D)-(I). 

Step 3: Final Answer: 
Hence, the correct option is (D).