Question

Match List-I with List-II

List-I	List-II
(A) Specific yield	(III) Ratio of volume of water a material retains after drainage by gravity to the total volume
(B) Coefficient of storage	(II) Volume of water the aquifer releases from or takes into storage per unit area of the aquifer
(C) Specific retention	(I) Volume of water released or stored per unit surface area of the aquifer per unit change in the component of head normal to that of the surface
(D) Transmissivity	(IV) Rate at which water gets transmitted through a unit width of the aquifer and extending through the full saturated thickness of the aquifer, under a hydraulic gradient

Choose the correct answer from the options given below:

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

Hint:

When matching aquifer terms, focus on their definitions and relationships to water movement and storage.

Answer 1

The Correct Option is A

Step 1: Aquifer Term Definitions.
- Specific yield: Volume of water released/stored per unit aquifer area. - Coefficient of storage: Volume of water an aquifer releases/takes into storage per unit area.- Specific retention: Ratio of water retained by a material after gravity drainage. - Transmissivity: Rate of water transmission through the aquifer.
Step 2: Option Analysis.
- (A) Specific yield: Corresponds to (I), defined as the volume of water released or stored per unit surface area of the aquifer. - (B) Coefficient of storage: Corresponds to (II), defined as the volume of water the aquifer releases or stores. - (C) Specific retention: Corresponds to (III), defined as the ratio of water retained after gravity drainage. - (D) Transmissivity: Corresponds to (IV), defined as the rate at which water is transmitted through the aquifer.
Step 3: Conclusion.
The correct matching is (A) - (I), (B) - (II), (C) - (III), (D) - (IV).
Final Answer: \[ \boxed{1. (A) - (I), (B) - (II), (C) - (III), (D) - (IV)}\]