List of top Soil Science Questions on Soil and Water Conservation

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.

The objectives of bench terracing are: A. To reduce the quantum of overland flow/sheet flow or run-off and their velocity, B. To minimize soil erosion, C. To conserve soil moisture, D. To promote intensive land use and permanent agricultural practices, E. To keep the environment pollution free.

The objectives of contour cultivation are: A. To reduce sheet and rill erosion, B. To reduce sediment transport, C. To enhance infiltration rate, D. To stabilize the sand dunes, E. Provide fuel and fodder.

The agronomical measures are used for the control of: A. Soil loss, B. Soil erosion, C. Sediment yield, D. Gabions, E. Raindrop impact.

General requirements of the permanent structures for gully control are: A. They should be constructed with permanent material, B. They should have adequate capacity to handle the run-off, C. They should help in stabilizing the gully, D. Perennial grasses required, E. Chute spillway are used at the bend to convey the water safely to the gully bed.

Arrange the recommended values of maximum return period for construction of different soil and water conservation structures. A. Storage and diversion dams with permanent spillways, B. Earthen dams with storage having natural spillways, C. Terrace outlets and vegetated waterways, D. Field diversion, E. Dam for stocking the water.

Given below are two statements: Assertion (A): The amount of soil erosion depends upon a combination of the power of rain or wind to cause erosion and the ability of the soil to withstand the impact. Reason (R): The soil and water conservation falls into two categories, viz. agronomic measures and mechanical protection measures.

Given below are two statements: Assertion (A): Contour strip cropping is the growing of erosion permitting crops in strips of suitable widths across the slope on contour, alternating with strips of soil protecting and erosion resisting crops. Reason (R): It shortens the length of the slope, checks movements of run-off, helps desilt if increases the absorption of rain water.

The hydraulic design of permanent gully control structure's determining parameter is:

Which one is the mechanical measure of erosion control?

Contour farming is:

The characteristics of the raindrops, which are important from soil erosion point of view are:
A. Raindrop size
B. Terminal velocity
C. Kinetic energy
D. Drop size distribution
Choose the correct answer from the options given below:

The chief advantages of strip cropping are:
A. Physical protection against blowing, provided by the vegetation.
B. Soil erosion is limited to a distance equal to the length of the strip.
C. Greater conservation of moisture.
D. The possibility of the earliest harvest.
Choose the correct answer from the options given below:

The design of a terrace involves:
A. Proper spacing of terraces
B. Location of terrace
C. Design of channel with adequate capacity
D. Development of farmable cross section
Choose the correct answer from the options given below:

Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Wind break} & I. \ \text{Surface creep movement} \\ B. \ \text{Boraxing soil particles} & II. \ \text{Suspension movement} \\ C. \ \text{Coarse soil particles} & III. \ \text{Saltation movement} \\ D. \ \text{Floating soil particles} & IV. \ \text{Vegetative barrier for wind erosion} \\ \hline \end{array} \]
Choose the correct answer from the options given below: