1000+ Astronomy Multiple Choice Question Answer [Solved]

1. What is the name given to the widened rivermouth found at the point a river enters the sea?
A. Estuary
B. Bay
C. Gulf
D. Delta
Answer : A

2. The shortest route between two places is along the
A. longitudes
B. latitudes
C. rivers
D. direction of winds
Answer : A

3. When the earth is at its minimum distance from the Sun, it is said to be
A. Perigee
B. Apogee
C. Perihelion
D. Aphelion
Answer : C

4. How much time (approximately) does the light from the nearest star to the Sun take in reaching the earth?
A. 4.3 seconds
B. 4.3 years
C. 4.3 minutes
D. 4.3 hours
Answer : B

5. The dark patches, associated with the Sun storms present in Sun are called
A. Sunspots
B. Pulsars
C. White Dwarfstar
D. Supernova
Answer : A

6. Lunar eclipse means
A. Direction or path of the Moon
B. The Moon comes between the Sun and the Earth
C. The Earth comes in between the sun and the Moon and the centres of all the three come on the same straight line
D. The average angle made by a line drawn from the Moon to the Earth
Answer : C

7. Which two Planets do not have any satellites?
A. Venus and Mercury
B. Venus and Uranus
C. Venus and Neptune
D. Mercury and Uranus
Answer : A

8. The planet of lowest density (0.69) is __ .
A. Jupiter
B. Saturn
C. Neptune
D. Pluto
Answer : B

9. Average density of the Earth is ( relative to water) __.
A. 5.5
B. 4.5
C. 9.5
D. 6.5
Answer : A

10. What happens when ships cross the International Date Line?
A. They have to pay a tax
B. Ships going west from the USA lose a day, ships going east from Japan and Australia gain a day
C. They have to report at the customs post
D. They have to check their clocks agains
Answer : B

11. A family or system of millions and millions of stars are called ____.
A. Universe
B. Solar System
C. Galaxy
D. Asteroids
Answer : A

12. Which planet rotates on its axis from east to west?
A. Venus
B. Uranus
C. Earth
D. Jupiter
Answer : A

13. Earth revolves round the Sun In an orbit once In every __.
A. 24 hours
B. 20 hours
C. 365 % days
D. 366 days
Answer : C

14. Polar Auroras are called __ in Southern Hemisphere.
A. Aurora Australis
B. Quasars
C. Aurora Borealis
D. Pulsar
Answer : A

15. Which 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 per cent of the mass of the Solar System
D. The diameter of the Sun is 190 times that of the Earth
Answer : A

16. When a year divisible by 4 and not divisible by 400 is called
A. Siderial Year
B. Solar Year
C. Cosmic Year
D. Leap Year
Answer : D

17. What is the shape of our galaxy 'Milky Way'?
A. spiral
B. elliptical
C. circular
D. spherical
Answer : A

18. Equatorial diameter of the Earth is __.
A. 12757 km
B. 17257 km
C. 17527 km
D. 17572 km
Answer : A

19. What is the average radius of the Earth?
A. 6071km
B. 6571km
C. 6371km
D. 6771 km
Answer : C

20. Charon' is the satellite of _____.
A. Earth
B. Saturn
C. Pluto
D. Neptune
Answer : C

21. What is the unit of measurement of distance between celestial bodies?
A. Light year
B. Nautical mile
C. Statute mile
D. Kilometre
Answer : A

22. How many planets does our Solar System consist of?
A. 9
B. 6
C. 7
D. 10
Answer : A

23. Which planet la known as a 'Morning Star' as well as an 'Evening Star'?
A. Venus
B. Uranus
C. Mercury
D. Mars
Answer : A

24. The Sun contains over ___of the total mass of the Solar System.
A. 0.825
B. 0.98
C. 0.998
D. 0.02
Answer : C

25. Who was the first person to describe the earth as a sphere?
A. Columbus
B. Varahmihir
C. Aryabhat
D. Copernicus
Answer : D

26. Oldest object in the Solar System is __.
A. Titania
B. Titan
C. Miranda
D. Europa
Answer : C

27. Which of the following is the largest ocean?
A. Indian
B. Pacific
C. Atlantic
D. Arctic
Answer : B

28. How much time is taken by the Moon in completing one revolution around the Earth?
A. 27 days
B. 29 days
C. 29.32 days
D. 27.32 days
Answer : D

29. On which date is the Earth in 'perihelion'?
A. January-3
B. June-21
C. July-4
D. December-22
Answer : A

30. What part of the moon's surface is never visible from the earth?
A. 1.41
B. 1.47
C. 0.59
D. 0.5
Answer : A

31. Consider the following statements regarding asteroids:
1. Asteroids are rocky debris of varying sizes orbiting the Sun.
2. Most of the asteroids are small but some have diameter as large as 1000 km.
3. The orbit of asteroids lies between the orbits of
A. 1, 2 and 3 are correct
B. 2 and 3 are correct
C. 1 and 2 are correct
D. 1 and 3 are correct
Answer : C

32. Which of the following is known as 'King of Planets'?
A. Earth
B. Jupiter
C. Mercury
D. Venus
Answer : B

33. The atmosphere of Venus contains large quantity of
A. Carbondioxide and sulphuric acid
B. Carbondioxide and nitric acid
C. Nitrogen and sulphuric acid
D. Nitrogen and nitric acid
Answer : A

34. Polar diameter of the Eearth is.
A. 17214 km
B. 12741 km
C. 12714 km
D. 17124 km
Answer : C

35. In which of the following planets, the Great Red Spot has been the special feature?
A. Jupiter
B. Saturn
C. Mars
D. Venus
Answer : A

36. On the summer solstice in the Northern Hemisphere which of the hollowing latitudes will have the longest night?
A. 45°S
B. 60°S
C. 60°N
D. 45°N
Answer : B

37. What do you call a narrow neck oC land that connects two larger landmasses?
A. Peninsula
B. Isthmus
C. Cape
D. Strait
Answer : B

38. What is significant about the town of Greenwich?
A. The International Date Line passes through it
B. The 0° (Zero) meridian passes through it and therefore the world sets its time by it
C. It is at 180� longitude
D. It is a major horological research centre in Britain
Answer : B

39. Which of the following are the Inner Planets?
1. Mercury
2. Venus
3. Earth
4. Mars
A. Only 1
B. 1 and 2
C. 1, 2 and 3
D. 1, 2, 3 and 4
Answer : D

40. Among the following which planet takes maximum time for one revolution around the Sun?
A. Earth
B. Jupiter
C. Mars
D. Venus
Answer : B

41. From west to east, what are the three main island groups in the Pacific called?
A. Melanesia, Micronesia and Polynesia
B. Polynesia, Micronesia and Melanesia
C. Melanesia, Polynesia and Micronesia
D. Micronesia, Polynesia and Melanesia
Answer : A

42. Which two planets do not have any satellites?
1. Mercury
2. Venus
3. Saturn
4. Pluto
A. 1 and 2
B. 2 WtQ 3
C. 3 and 4
D. 1 and 4
Answer : A

43. How much time does the earth take in completing one rotation on its axis in relation to sun?
A. 23 hours 56 minutes
B. 24 hours
C. 23 hours 46 minutes
D. 24 hours 4 minutes
Answer : B

44. Sidereal means
A. Pertaining or referring to the stars
B. Pertaining or referring to the moon
C. Pertaining or referring to the Sun
D. Pertaining' or referring to the cosmic bodies
Answer : A

45. What proportion of the mass of the earth does the mass of the Moon equal?
A. 1/81
B. 1/18
C. 1/27
D. 1/72
Answer : A

46. Sun revolves around galaxy once in every 250 million years, this length of time is called _____.
A. Cosmic or Galactic Year
B. Mean Solar Year
C. Sidereal Year
D. Leap Year
Answer : A

47. A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those two Planets?
A. Mars and Jupiter
B. Earth and Venus
C. Neptune and Pluto
D. Jupiter and Saturn
Answer : A

48. Largest planet of our Solar System is _____.
A. Jupiter
B. Mars
C. Saturn
D. Uranus
Answer : A

49. All asteroids collectively revolve around the
A. Sun
B. Planet
C. Satellite
D. Moon
Answer : A

50. Halley's comet visits us after every.
A. 66 years
B. 76 years
C. 86 years
D. 96 years
Answer : B