Identify A and B.

1. A: Anticline B: Archline
2. A: Syncline B: Anticline
3. A: Anticline B: Syncline
4. A: Syncline B: Archline

Oceanic trenches in combination with volcanic mountain systems lead to the formation of:

1. Troughs
2. Ridges
3. Fold mountains
4. Synclines

Assertion (A): External forces or Exogenic forces are Destructive Forces.

Reason (R): They produce relief such as mountains, plateaus, plains, lakes and big faults.

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.

Assertion (A): Residual mountains are also called mountains of denudation.

Reason (R): Denudation and erosion by natural agents cause mountains to be lowered.

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.