The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called _____.

1. 1. Comets
   2. Asteroids
   3. Meteors
   4. Meteorites

Asteroids or planetoids circle between _____.

1. 1. Mars and earth
   2. Venus and earth
   3. Mars and Jupiter
   4. Jupiter and Saturn

Phases of the Moon are caused by _____.

1. 1. Rotation of Earth
   2. Rotation of the Moon
   3. The Revolution of the Earth
   4. The Revolution of Earth

Which is the densest planet of the solar system?

1. 1. Jupiter
   2. Sun
   3. Mercury
   4. Earth

Which of the following planets have no moon?

1. 1. Pluto and Mercury
   2. Mercury and Venus
   3. Mars and Venus
   4. Pluto and Mars

Mercury is _____.

1. 1. The fastest planet
   2. The largest planet
   3. The largest & fastest planet
   4. The planet nearest to sun

The scientists have found some proofs of presence of life on which of the following planets?

1. 1. Mars
   2. Venus
   3. Jupiter
   4. Mercury

The energy generation in stars is _____.

1. 1. Due to fission and fusion of light nuclei
   2. Solely due to the fusion of heavy nuclei
   3. Mainly due to the fission of heavy nuclei
   4. Mainly due to the fusion of light nuclei

Which is the brightest planet in the Solar system?

1. 1. Venus
   2. Mercury
   3. Jupiter
   4. Uranus

Which is the brightest comet known to man so far?

1. 1. Shoemaker-Levy
   2. Swift-Tuttle
   3. Kohoutek
   4. Hale-Bopp