1. Which one of the following statements is correct with reference to our solar system?
a) The Earth is the densest of all the planets in our solar system
b) The predominant element in the composition of Earth is silicon
c) The Sun contains 75 percent of the mass of the solar system
d) The diameter of the Sun is 190 times that of the Earth
2. The Srnith-tuttle comet will crash with Earth in:
a) 2106 AD
b) 2116 AD
c) 2126 AD
d) 2136 AD
3. The correct sequence of the following planets in terms of gravity, in the descending
order is :
a) Saturn, Earth, Neptune, Uranus
b) Neptune, Uranus, Saturn, Earth
c) Uranus, Earth, Saturn, Neptune
d) Earth, Uranus, Neptune, Saturn
4. Which of the following gases is most predominant in the Sun?
a) Helium
b) Hydrogen
c) Nitrogen
d) Ozone
5. NASA's Deep Impact space mission was employed to take detailed pictures of which
comet nucleus?
a) Halley's Comet
b) Hale-Bopp
c) Hyakutake
d) Tempel 1
6. Consider the following statements:
1. The albedo of an object determines its visual brightness when viewed with reflected
light.
2. The albedo of Mercury is much greater than the albedo of the Earth.
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
7. Which of the following statements is/are correct?
1. In comparison to the Jupiter, planet Earth displays eclipses more frequently
2. On Mars, only partial solar eclipses are possible
Select the correct answer using the code given below:
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
8. Which of the following statements relating to the planet Venus is/are correct?
1. It is the nearest planet from the Sun.
2. It is only slightly smaller than the Earth.
3. It has no atmosphere.
Select the correct answer using the code given below:
a) 1, 2 and 3
b) 1 and 3 only
c) 2 only
d) 1 and 2 only
9. What is the difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held
together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are
found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is/are correct?
a) 1 and 2 only
b) 1 and 3 only
c) 3 only
d) 1, 2 and 3
10. A blackhole is a :
a) contracted star with intense gravitational pull
b) star with very low surface temperature
c) star with no atmosphere
d) pulsating star