‘A star which appears blue’ is _____.

1. 1. Hotter than the sun
   2. As hot as the sun
   3. Cooler than the sun
   4. Cooler than the moon

The outermost layer of Sun is called _____.

1. 1. Photosphere
   2. Chromosphere
   3. Corona
   4. Convection zone

Pole Star always seen at one point in the sky whereas other stars are not; this is because _____.

1. 1. Pole star lies in the axis of spin of the earth
   2. Sun and Pole star are in two opposite directions relative to earth
   3. Pole Star is a star of our won galaxy
   4. Pole star rotates with the same period as the earth

According to new scientific research water is present on the surface of _____ except earth planet.

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

Some times the earth passes exactly between the moon and the sun this condition is known as _____.

1. 1. Solar eclipse
   2. Lunar eclipse
   3. Earth eclipse
   4. Noe of these

Stars which appears single to the naked eye but are double stars when observed by a telescope, are known as _____.

1. 1. Quasars
   2. Novae and supernovae
   3. Cosmic Stars
   4. Binderies 

How many of the eight planets of the solar system were known in the life time of Kepler, the formulator of laws of planetary motions?

1. 1. 6
   2. 7
   3. 8
   4. All the planets

How many days does the moon take to return to the same position among the constellations?

1. 1. 20 days
   2. 23 days
   3. 26 days
   4. 28 days

Some times the moon passes between the sun and the earth this phenomenon is known as _____.

1. 1. Earth eclipse
   2. Solar eclipse
   3. Lunar eclipse
   4. None of these

A Comet _____.

1. 1. Has a tail always pointing towards the sun
   2. Has a tail, sometimes pointing towards the sun and sometimes away from it
   3. has no tail at all
   4. Has a tail always pointing away from the sun