2156: Which of the following statements is true?

(a) Both salinity and density of sea increase with depth

(b) Both salinity and density of sea decrease with depth

(c) Salinity increases but density of sea decreases with depth

(d) Salinity decreases but density of sea increases with depth
2157: Given below is a map of some countries which were parts of the erstwhile Soviet Union with water bodies shown by shaded areas :

The countries marked 1, 2, 3, 4 and 5 are respectively

(a) Tajikistan, Turkmenia, Uzbekistan, Kirgizia, Kazakhstan
(b) Turkmnia, Kirgizia, Tajikistan, Uzbekistan, Kazakhstan
(c) Kazakhstan, Uzbekistan, Tajikistan, Kirgizia, Turkmenia
(d) Kazakhstan, Turkmenia, Uzbekistan, Kirgizia, Tajikstan
2158: A body partially floats in water when:

(a) The volume of the displaced liquid is equal to the volume of the body

(b) The volume of the displaced liquid is greater than the volume of the body

(c) The weight of the displaced water is equal to the weight of the body

(d) The weight of the displaced water is greater than the weight of the body
2159: The tendency of a liquid drop to contract and occupy minimum area is due to

(a) viscosity
(b) surface tension
(c) density
(d) vapour pressure
2160: The original name of Mahabharata was

(a) Brihit Katha

(b) Sahastra Samhita

(c) Jaya Samhita

(d) Rajatarangini