Question

Match the plutonic rocks in Group I with corresponding volcanic equivalents in Group II.
Group I
P. Granite
Q. Syenite
R. Diorite
S. Gabbro
Group II
1. Andesite
2. Basalt
3. Rhyolite
4. Trachyte

• A. P-2, Q-3, R-4, S-1
• B. P-3, Q-4, R-1, S-2
• C. P-4, Q-3, R-1, S-2
• D. P-3, Q-4, R-2, S-1

Hint:

Remember that granite corresponds to rhyolite, syenite corresponds to trachyte, diorite corresponds to andesite, and gabbro corresponds to basalt.

Answer 1

The Correct Option is B

Step 1: Understanding plutonic and volcanic equivalents. 
Plutonic rocks are formed from the cooling of magma beneath the Earth's surface, while volcanic rocks form when lava cools on the surface. The corresponding volcanic equivalents for the given plutonic rocks are: 
- Granite corresponds to Rhyolite (P-3). 
- Syenite corresponds to Trachyte (Q-4). 
- Diorite corresponds to Andesite (R-1). 
- Gabbro corresponds to Basalt (S-2). 
 

Step 2: Analyzing the options. 
(A) P-2, Q-3, R-4, S-1: This is incorrect because the rock types do not match their volcanic equivalents. 
(B) P-3, Q-4, R-1, S-2: This is the correct answer as it matches the plutonic and volcanic rock equivalents. 
(C) P-4, Q-3, R-1, S-2: This is incorrect because the rock types do not match their volcanic equivalents. 
(D) P-3, Q-4, R-2, S-1: This is incorrect because the rock types do not match their volcanic equivalents. 
 

Step 3: Conclusion. 
The correct answer is (B) P-3, Q-4, R-1, S-2.