21: In India people suffer from Anaemia due to lack of:
(a) Iron
(b) Iodine
(c) Calcium
(d) Potassium
22: Which number will continue the following series?
3, 8, 15, 24, 35, 48, 63, 80,........
(a) 92
(b) 99
(c) 91
(d) 87
23: Which one among the following countries has the lowest GDP per capita?
(a) China
(b) India
(c) Indonesia
(d) Sri Lanka
24: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
I. Potassium bromide (A) Fertiliser
II. Potassium nitrate (B) Photography
III. Potassium sulphate (C) Bakery
IV. Mono-potassium tartarate (D) Gunpowder
Codes:
(a) I-B, II-D, III-A, IV-C
(b) I-B, II-D, III-C, IV-A
(c) I-D, II-B, III-C, IV-A
(d) I-D, II-B, III-A, IV-C
25: Assertion (A):
West-flowing rivers of Peninsular India have no deltas.
Reason (R):
These rivers do not carry any alluvial sediments.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually 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