Question

Technique		Purpose
P	Mulching	1	Dust control
Q	Aeration	2	Noise control
R	Wet-scrubbing	3	Soil conservation
S	Silencer	4	Waste water treatment

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

Hint:

Environmental management in mining involves multiple techniques to mitigate impacts on air, water, and soil.

Answer 1

The Correct Option is A

Technique	Purpose
Mulching	Dust control
Aeration	Waste water treatment
Wet-scrubbing	Soil conservation
Silencer	Noise control

To determine the correct match between technique and its purpose, evaluate the given options:

P-1, Q-4, R-3, S-2

Match:

• Mulching (P): Dust control - Correct
• Aeration (Q): Waste water treatment - Correct
• Wet-scrubbing (R): Soil conservation - Correct
• Silencer (S): Noise control - Correct

All pairs align correctly with the given purposes, confirming that the option P-1, Q-4, R-3, S-2 is valid.