Q 24 –The oceans were formed within __________ from the formation of the earth. (a) 500 million years ago (b) 300 million years ago (c) 400 million years ago (d) 200 million years ago
Q 25 –Which one of the following is not related to the formation or modification of the present atmosphere? (a) Solar winds (b) Differentiation (c) Degassing (d) Photosynthesis
Q 26 –Why are the terrestrial planets rocky? (a) These planets are smaller (b) They could not hold the escaping gases (c) Both a and b (d) None of these
Q 30 –The wrong statement in relation to terrestrial planets is (a) they are formed at quite a distant location. (b) they have low gravitational pull. (c) they could not hold the escaping gases. (d) they are made up of rocks and metal, and have relatively high densities
Q 33 –What is the diameter of Galaxies? (a) Between 80 thousands to 1, 50,000 light years (b) Between 70 thousands to 1, 30,000 light years (c) Between 50 thousands to 1, 10,000 light years (d) Between 30 thousands to 1, 20,000 light years
Q 34 –Fossils are (a) remains of plants and animals in the rocks (b) the old rocks (c) the old books related to the origin of the earth (d) the dust particles
Q 35 –The inner planets mean (a) Planets between the sun and the earth (b) Planets between the sun and the belt of asteroids (c) Planets in gaseous state (d) Planets without satellite(s)
(b) Planets between the sun and the belt of asteroids
Q 36 –What is the distance between the Earth and the Sun? (a) 149.6 Millions kms (b) 15.98 Millions kms (c) 169.34 Millions kms (d) 179.67 Millions kms
Q 37 –Expansion of universe means (a) increase in the number of stars. (b) increase in space between the galaxies. (c) discovery of new celestial bodies. (d) increase in the speed of rotation of planets.
Q 39 –Who suggested that the earth and the moon formed a single rapidly rotating body? (a) Sir George (b) Sir Chamberlain (c) Sir Moulton (d) None of these
Q 40 –Why are the terrestrial planets rocky? (a) These planets are smaller (b) They could not hold the escaping gases (c) Both a and b (d) None of these