The area from which a river collect s its
water is called ……….
a) source area
b) mouth area
c) catchment area
d) none of these
A river is/are important agent of………….
a) erosion
b) transportation
c) deposition
d) all of these
How many kinds of processes are involved in erosional work of river?
a) 2
b) 3
c) 4
d) 5
Big and heavy stones are rolled along the bed of the river. These stone erode the bed of the river both downward as well as sideward. This process is called…………
a) corrosion
b) Abrasion
c) both a and b
d) none of these
Which of the following is the force of moving water through which it picks up loose material and weaken solid rocks?
a) corrosion
b) solution
c) hydraulic action
d) attrition
The wear and tear of pebbles and builders with one another is called………
a) corrosion
b) solution
c) hydraulic action
d) attrition
