The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are_________________?

A. at right angle and parallel to weir crest
B. parallel and at right angle to weir crest
C. parallel to weir crest in both
D. at right angle to weir crest in both
✅ The correct answer is option A.

Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas. Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below ?

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
✅ The correct answer is option A.