Which planet is known as the “Earth’s Twin”?
- (A) Venus
- (B) Mars
- (C) Mercury
- (D) Uranus
- (A) Venus
Which of the following is the largest planet of our solar system?
- (A) Uranus
- (B) Saturn
- (C) Jupiter
- (D) Venus
- (C) Jupiter
What process produces a star’s energy?
- (A) Hydrogen combustion
- (B) Nuclear fusion
- (C) Neutron beta decay
- (D) Nuclear fission
- (B) Nuclear fusion
How many times is the volume of Jupiter as compared to earth?
- (A) 1000 times
- (B) 1200 times
- (C) 1400 times
- (D) 1600 times
- (C) 1400 times
A ‘Pulsar’ is actually:
- (A) A black hole
- (B) A white dwarf
- (C) A red giant
- (D) A neutron star
- (D) A neutron star
Name the planet that has the greatest number of known moons:
- (A) Earth
- (B) Saturn
- (C) Jupiter
- (D) Neptune
- (B) Saturn
Which planet has the smallest diameter?
- (A) Mercury
- (B) Venus
- (C) Neptune
- (D) Jupiter
- (A) Mercury
What is the rotation time period of Mercury?
- (A) 58 days, 15 hours and 30 minutes
- (B) 65 days, 22 hours and 22 minutes
- (C) 70 days, 24 hours and 54 minutes
- (D) 80 days, 12 hours and 40 minutes
- (A) 58 days, 15 hours and 30 minutes
Which galaxies contain only old stars, new star cannot form in most of them?
- (A) Spiral galaxies
- (B) Elliptical galaxies
- (C) Regular galaxies
- (D) Irregular galaxies
- (B) Elliptical galaxies
Which of the following galaxies have no definite shape?
- (A) Regular galaxies
- (B) Spiral galaxies
- (C) Irregular galaxies
- (D) Elliptical galaxies
- (C) Irregular galaxies
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