…………… are moon-shaped dunes.

1. Dunes
2. Sand Dunes
3. Barchan
4. Seifs

Stationary, long and narrow sand-ridges which grow parallel to the direction of the prevailing wind and remain in a fixed position.

1. Dunes
2. Sand Dunes
3. Barchan
4. Seifs

Assertion (A): In the lower course of the river all the ideal conditions for depositional landforms exist.

Reason (R): The load-transporting capacity is drastically reduced due to sluggish flow as well as division of a river into many distributaries.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Which amongst the following is not a factor affecting work of a river?

1. Velocity of water
2. Quality of water
3. Volume of water
4. Load of water