Correct Answer : A
Q : 2 The thickness of earth Crust is about ?
(A) 25 Km
(B) 30 Km
(C) 35 Km
(D) 40 Km
Q : 3 The proportion of Hydrogen to Helium in the Sun is ?
Q : 4 Ozone is present in which of the following layers ?
Q : 5 Atmosphere has how many distinct layers ?
Q : 6 Among following which gas availability is more in atmosphere ?
(C) Carbon dioxide
Q : 7 Autumnal Equinox occurs on ?
(A) September 22
(B) September 23
(C) October 22
(D) October 23