3626: Nine different letters are to be dropped in three different letter boxes. In how many different ways can this be done?
(a) 27
(b) 3^9
(c) 9^3
(d) 3^9 - 3
3627: What is a continental shelf?
(a) It is a part of the ocean which is really an extension of the land mass, but submerged.
(b) It is that part where the ocean commences.
(c) It is a land mass which is surrounded by water on all sides.
(d) It is a part of the continent that is submerged in relatively shallow sea.
3628: Consider the following statements:
1. Between Census 1951 and Census 2001, the density of the population of India has increased more than three times.
2. Between Census 1951 and Census 2001, the annual growth rate (exponential) of the population of India has doubled.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
3629: Which of the following stream systems dissects Aravalli range?
(a) Narmada, Son
(b) Banas, Luni
(c) Betwa, Koina
(d) Ganga, Saraswati
3630: The term 'Goldilocks Zone' is often seen in the news in the context of
(a) the limits of habitable zone above the surface of the Earth
(b) regions inside the Earth where shale gas is available
(c) search for the Earth-like planets in outer space
(d) search for meteorites containing precious metals