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1691.

Critical diameter of clod takes place in the wind erosion is:

A.	0.50 mm	B.	0.84 mm
C.	0.10 mm	D.	100 mm

1692.

At the wind velocity greater than threshold value, the vibration of particles will be:

A.	Zero	B.	More
C.	Slight	D.	None of these

1693.

Threshold wind velocity is directly proportional to:

A.	Soil particles diameter	B.	Square root of particles diameter
C.	Height from ground surface	D.	None of these

1694.

Sand dune' is associated with:

A.	Wind erosion	B.	Chemical erosion
C.	Water erosion	D.	None of these

1695.

Wind erosion can be controlled by use of:

A.	Mulch over soil surface	B.	No tillage
C.	Both (a) and (b)	D.	None of these

1696.

Shelterbelts are constructed by:

A.	One row	B.	Two rows
C.	More than two rows	D.	None of these

1697.

Stubble mulching is associated with:

A.	Water erosion	B.	Wind erosion
C.	Glacial erosion	D.	None of these

1698.

Splash erosion takes place when rainfall intensity exceeds the:

A.	Infiltration rate	B.	Evapotranspiration rate
C.	Both (a) and (b)	D.	None of these

1699.

Gully erosion is the advance stage of:

A.	Splash erosion	B.	Sheet erosion
C.	Rill erosion	D.	All are correct

1700.

Universal Soil Loss Equation (USLE) is named because:

A.	Its validity is more:	B.	It accounts all parameters affecting the soil loss
C.	It is universally adopted	D.	All are correct