61. List-I contains various irrigation efficiencies and List-II contains the procedure to calculate

it:
List —I List — II

(K) Water (1) Ratio of the quantity of water delivered into the fields from
Conveyance the outlet point of the channel to the water entering into
efficiency the channel at its starting point.

(L) Water (2) Ratio of the water beneficially used to the quantity of
application water delivered.
efficiency

(M) Water storage (3) Ratio of the water stored in the root zone during irrigation
efficiency to the water needed in the root zone prior to irrigation.

(N) Water use (4) Ratio of the quantity of water stored into the root zone of
efficiency the crops to the quantity of water actually delivered into

the field.

Choose the correct matching between List-I and List-II from the following options

Codes (K) ൨) ൨2൧ 0०

(A) 1 2 8 4
(8) 1 8 4 2
(0 1 4 8 2
0) 4 3 1 2

62. Wheat is to be grown in a field having field capacity equal to 30% and the permanent wilting
point equal to 10%. Irrigation water is to be supplied when the moisture content of the soil
falls to 20%. The root zone depth is 1m, dry weight of soil is 14kN/m? and the specific weight
of water is 10 kN/m®. The Net Irrigation Requirement (NIR) for the above cultivation is :

(A) 28cm of water (B) 21cm of water
(0 19.6cm of water (D) 14cm of water

63. List-I gives the names for geological formations with respect to its ground water potentiality.
List-II contains examples for the types given in List-I :

List —I List ॥
(K) Aquifer (1) Gravel deposits
(1) Aquitard (2) Clay deposits
04) Aquifuge (3) Granite rocks
(N) Aquiclude (4) Clay formations inter bedded with sand layers

Choose the correct matching of List-I with List-II from the following options
Codes (K) ൨) ൨2൧ 0०

(A) 1 2 8 4
(8) 1 4 8 2
© 4 38 2 41
D) 2 4 1 3

085/2023 12 A