Assertion (A): The forces of faulting lead to the formation of block mountains.

Reason (R): Block mountains are often separated by intervening basins called graben.

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.

The Coromandel plains along the east coast of India were formed as a result of two different activities. Name them.

1. Subsidence, deposition
2. Subsidence, erosion
3. Upliftment, deposition
4. Upliftment, erosion

Depositional plains formed as a result of action of wind have irregular and undulating surface because of

1. new deposits made everyday.
2. existence of sand dunes and hallows.
3. existence of scrubs.
4. All of the above.

A piece of land reclaimed from the sea or lake:

1. Horst
2. Graben
3. Dyke
4. Polder