Question

Match List-I with List-II. List-I Soil Conservation entities: A. Land grading, B. Land utilization index, C. Hydrograph, D. Hyetograph. List-II Description: I. Derived by plotting the rainfall intensity and time, II. Plotting the discharge and corresponding time data, III. Process of land modification under which field surface is reshaped to a desired slope and elevation, IV. The number of days in a year during which the crops occupy the land divided by 365.

• A. A-I, B-II, C-III, D-IV
• B. A-II, B-III, C-I, D-IV
• C. A-IV, B-II, C-III, D-I
• D. A-III, B-IV, C-II, D-I

Hint:

Hydrograph shows discharge versus time, while hyetograph shows rainfall intensity versus time.

Answer 1

The Correct Option is D

Concept:
This question is based on basic soil conservation and hydrology terms.

Step 1: Land grading.
Land grading is the process of reshaping the field surface to a desired slope and elevation. \[ A\rightarrow III \]

Step 2: Land utilization index.
Land utilization index is the number of days in a year during which crops occupy the land divided by \(365\). \[ B\rightarrow IV \]

Step 3: Hydrograph.
Hydrograph is obtained by plotting discharge against corresponding time. \[ C\rightarrow II \]

Step 4: Hyetograph.
Hyetograph is obtained by plotting rainfall intensity against time. \[ D\rightarrow I \] Therefore: \[ A-III,\ B-IV,\ C-II,\ D-I \] \[ \therefore \text{Correct Answer is (D)} \]