Question

Match List-I with List-II

List-I & List-II
(A) Land use & (I) Cover crop
(B) C : N ratio & (II) Hilly areas
(C) Landslide & (III) Mineralization and immobilization
(D) Soil and water conservation & (IV) Soil capability classification

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

Hint:

Always associate the C:N ratio with "mineralization and immobilization," as it is the most fundamental biochemical rule governing nitrogen availability in soils.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
To match the components correctly, we need to analyze how soil characteristics, conservation measures, and geomorphology relate to land use and nutrient dynamics.

Step 3: Detailed Explanation:
Let us pair each item in List-I with the corresponding term in List-II:
- (A) Land use $\rightarrow$ Soil capability classification (IV): Soil capability classification evaluates soil limitations and categorizes land into classes, guiding sustainable Land use planning for agriculture, forestry, or pasture.
- (B) C : N ratio $\rightarrow$ Mineralization and immobilization (III): The Carbon-to-Nitrogen (C:N) ratio of organic residues added to the soil governs whether soil nitrogen undergoes mineralization (organic to inorganic form) or immobilization (inorganic to organic form by microbes).
- (C) Landslide $\rightarrow$ Hilly areas (II): Landslides are mass wasting events characterized by gravity-driven down-slope movement of soil and rock, occurring predominantly in steep, unstable Hilly areas.
- (D) Soil and water conservation $\rightarrow$ Cover crop (I): Planting a close-growing Cover crop protects the soil surface from water droplet impact, improves water infiltration, and reduces soil erosion, serving as a primary biological conservation practice.
This results in the matching sequence: (A)-(IV), (B)-(III), (C)-(II), (D)-(I).
This matches Option (A).

Step 4: Final Answer:
The correct matching sequence is (A) - (IV), (B) - (III), (C) - (II), (D) - (I).