1.
Largest Planet of the Inner Planets of the Solar system is –
[IAS 1990]
2.
The exact time taken by the earth to rotate one of its own axis is –
[RBI 1991]
3.
What is the black hole?
[CDS 1999, 2001]
4.
What type of orbit planets have while revolving around the sun?
[IFS 1993]
5.
Sun Spots are –
[Railways 1994]
6.
Why pole star always was seen at the one point in the sky?
[CDS 1993]
7.
What idea do we get from the light coming from stars?
8.
The time period of sun revolve around the galaxy is known as –
10.
Why the same side of the moon always faces the Earth?
[Railway 1994]
11.
Laws of planetary motion discovered by –
12.
Twelve constellations or Zodiac are referred to which of the following –
[IAS 1989]
13.
What is the evidence that comets are a member of our solar system?
14.
Why planet Mercury is difficult to observed?
15.
Which planet is most identical to earth by its day and tilt of axis?
[IAS 2003, 1994]
16.
Which among the planet has longest day?
[IAS 2003 CDS 1994]
17.
Which planet spin on its axis at fastest rate?
18.
Days and nights are equal throughout the globe when the sun is above:
19.
Latitude lines on a globe run from
20.
Latitude of South Pole is:
