1A 'black hole' is a body in space which does not allow any radiation to come out. This property is due to its?
(A) Very small size
(B) Very large size
(C) Very high density
(D) Very low density
2A celestial body consisting of a gaseous cloud enveloping a bright nucleus moving around the Sun in an elliptical or parabolic orbit so eccentrically that some escapes from the Solar Systems is called?
(B) Great Bear
3A celestial body having its own heat and light is called?
4A celestial body which revolves round a planet just as a planet revolves round the Sun is called _____.?
(D) Great Bear
5A celestial body which revolves round the Sun and receives heat and light from it is called _____.?
6A family or system of millions and millions of stars are called ____.?
(B) Solar System
7A leap year consists of?
(A) 365 days
(B) 365 days and 6 months
(C) 364 days
(D) 366 days
8A Light Year measures?
(A) A unit of velocity
(B) A unit of distance
(C) A unit of pressure
(D) A unit of time
9A meteor is?
(A) a rapidly moving star
(B) a piece of matter which has entered the earth's atmosphere from outer space
(C) part of a constellation
(D) a comet without a tail
10A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those two Planets?
(A) Mars and Jupiter
(B) Earth and Venus
(C) Neptune and Pluto
(D) Jupiter and Saturn
11A system of millions and millions of galaxies are called _____.?
(A) Solar System
12All asteroids collectively revolve around the?
13Among the following which planet takes maximum time for one revolution around the Sun?
14An ancient star that has collapsed matter so dense that It creates gravitational force so powerful that even light also does not escape. It Is called?
(B) Black Hole
(C) Neutron Star
(D) Black Dwarf
15An imaginary belt of 12 constellations or group of stars la called?
(B) Steller group
(D) Zodiacal light
16Arrange the Inner Planets in decreasing order of their distances from the Sun. 1. Earth 2. Mercury 3. Venus 4. Mars 5. Neptune?
(A) 1; 4; 3; 2
(B) 4; 2; 1; 3
(C) 4; 1; 2; 3
(D) 4; 1; 3; 2
17Arrange the Outer Planets in increasing order of their sizes. 1. Jupiter 2. Uranus 3. Saturn 4. Neptune?
(A) 4; 2; 3; 1
(B) 4; 2; 1; 3
(C) 2; 4; 3; 1
(D) 4; 2; 3; 1
18At present how many planets are in existence is visible?
(D) None of these
19At present how many planets are in existence is visible?
(D) None of these
20Average density of the Earth is ( relative to water) __.?
21Average temperature of the Earth is.?
22Bhabha Atomic Research Centre is situated in……
23Big Bang Theory' explains?
(A) the formation of universe
(B) the origin and evolution of earth's crust
(C) formation of Solar System
(D) formation of constellation
24Brightest planet of our Solar System is _____.?
25Charon' is the satellite of _____.?
26Chief of the air force is called………………
(B) Air marshal
(C) Air Chief Marshal
27Consider the following statements regarding asteroids: 1. Asteroids are rocky debris of varying sizes orbiting the Sun. 2. Most of the asteroids are small but some have diameter as large as 1000 km. 3. The orbit of asteroids lies between the orbits of?
(A) 1; 2 and 3 are correct
(B) 2 and 3 are correct
(C) 1 and 2 are correct
(D) 1 and 3 are correct
28Deimos and Phobos are the satellites of?
29Distance between the Moon and the Earth is 1. Approximately 386000 km 2. 1.25 light seconds?