3181: When a ship enters a sea from a river, its portion under water will:
(a) Increase
(b) Decrease
(c) Show no change
(d) Increase and decrease alternately
3182: A parachutist jumps from a height of 5000 meters. The relationship between his falling speed, 'v' and the distance fallen through 'd' is best represented as
3183: Who of the following was/were economic critic/ critics of colonialism in India?
1. Dadabhai Naoroji
2. G. Subramania Iyer
3. R. C. Dutt
Select the correct answer using the code given below.
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
3184: Pampas are the vast grassy plains of:
(a) South America
(b) North America
(c) Africa
(d) Eurasia
3185: In a class there are 18 boys who are over 160 cm tall. If these boys constitute three-fourths of the boys and the total number of boys is two-third of the number of students in the class, then what is the number of girls in the class?
(a) 6
(b) 12
(c) 18
(d) 24