Astronomy MCQ Solved Paper for RRB NTPC

1. 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

2. Period of sunspot cycle is
A. 11 years
B. 15 years
C. 21 years
D. 33 years
Answer : A

3. When does the Vernal Equinox occur?
A. December 25
B. March 21
C. February 28
D. January 14
Answer : B

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

5. Deimos and Phobos are the satellites of
A. Earth
B. Mars
C. Uranus
D. Neptune
Answer : B

6. Which one of the following conditions is moat relevant for the presence of life on Mars?
A. Atmospheric composition
B. Thermal conditions
C. Occurrence of ice caps and frozen water
D. Occurrence of ozone
Answer : C

7. Brightest planet of our Solar System is _____.
A. Venus
B. Mercury
C. Uranus
D. Saturn
Answer : A

8. Hale Bopp' is a newly discovered ____.
A. Planet
B. Meteore
C. Satellite
D. Comet
Answer : D

9. The name of our galaxy is _______
A. Alfa Centauri
B. Proxima Centauri
C. Milky Way
D. Neptune
Answer : C

10. The most important constituent of the Sun's mass is.
Hydrogen
Helium
Silicon
Iron
A. 1 and 2
B. 2 and 3
C. 3 and 4
D. 1,2 and 4
Answer : A

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

12. Which planet does experience a day almost of the same duration as the Earth?
A. Venus
B. Mercury
C. Mars
D. Jupiter
Answer : C

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

14. What is the name of the planet which takes 88 days to make one revolution of the Sun?
A. Venus
B. Mercury
C. Pluto
D. Neptune
Answer : B

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

16. The inclination of the earth's axis, i.e. the earth's axis is tilted at an angle from perpendicular to the orbital plane or makes an angle with the plane of the earth's orbit. What are these respective angles?
A. ${90}^0$
B. $23{\frac{1}{2}}^0$
C. $0^0$
D. $66{\frac{1}{2}}^0$
Answer : B

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

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

19. 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

20. What la the difference between a gulf and a bay?
A. A gulf is big and a bay is small
B. A gulf is at a rivermouth and a bay is not
C. A bay is surrounded by cliffs and a gulf by lowland
D. Both are part of the sea that extend considerably into the land, but a bay usually has a wider entrance than a gulf
Answer : D

21. Big Bang Theory' explains
A. the formation of universe
B. the origin and evolution of earth's crust
C. formation of Solar System
D. formation of constellation
Answer : A

22. Polar Auroras are
A. Quasars
B. b) Pulsar
C. Aurora Borealis
D. White Dwarfstar
Answer : C

23. A celestial body which revolves round the Sun and receives heat and light from it is called _____.
A. Planet
B. Orion
C. Satellite
D. Star
Answer : A

24. What part of the moon's surface can be visible from the earth?
A. 1.59
B. 1.41
C. 0.5
D. 1/3rd
Answer : A

25. 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

26. The rate of rotation of the Earth on its axis is the highest on which of the following date?
A. It never changes
B. January-4
C. January-3
D. January-21
Answer : A

27. Arrange the Outer Planets in increasing order of their sizes.
1. Jupiter
2. Uranus
3. Saturn
4. Neptune
A. 4, 2, 3, 1
B. 4, 2, 1, 3
C. 2, 4, 3, 1
D. 4, 2, 3, 1
Answer : A

28. 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

29. 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

30. Planet nearest to the earth is _____.
A. Venus
B. Mercury
C. Mars
D. Jupiter
Answer : A

31. What is the temperature of the sun estimated at approximately?
A. 5000°C
B. 6000°C
C. 7000°C
D. 212°C
Answer : B

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

33. What is the geographical term for land's end, that tip of land which projects into the sea?
A. A headland
B. A spit
C. A peninsula
D. A cape
Answer : D

34. What is the position of the moon called when it la farthest from the earth?
A. Perigee
B. Perihelion
C. Aphelion
D. Apogee
Answer : D

35. What is the name of 'brightest Planet'?
A. Venus
B. Mercury
C. Mars
D. Saturn
Answer : A

36. How many of the following statements are true?
1. Mean Solar Day is greater than Sidereal Day approximately by 4 minutes.
2. Earth's rotational velocity is decreasing.
3. Planets are arranged according to their increasing distance from the sun as follo
A. 3 and 4
B. 1, 3 and 4
C. 1 and 2
D. 1, 2, 3 and 4
Answer : D

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

38. What are the Pleides?
A. Constellation
B. Asteroides
C. Meteores
D. Comets
Answer : A

39. A celestial body which revolves round a planet just as a planet revolves round the Sun is called _____.
A. Moon
B. Asteroid
C. Satellite
D. Great Bear
Answer : C

40. Presently the farthest planet from the Sun is _____.
A. Pluto
B. Neptune
C. Uranus
D. Venus
Answer : A

41. 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

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

43. 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

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

45. Rapidly rotating stars emitting intense radio waves are called ___.
A. Pulsars
B. Quasuars
C. Neutron stars
D. All of the above
Answer : A

46. Which of the following planets is called 'blue planet'?
A. Venus
B. Earth
C. Mars
D. Uranus
Answer : B

47. The time taken by the sun to revolve around the centre or our galaxy is
A. 25 million yrs
B. 100 million yrs
C. 250 million yrs
D. 500 millionyrs
Answer : C

48. A 'black hole' is a body in space which does not allow any radiation to come out. This property is due to its
A. Very small size
B. Very large size
C. Very high density
D. Very low density
Answer : C

49. Polar circumference of the Earth is
A. 40000 km
B. 4000 km
C. 50000 km
D. 5000 km
Answer : A

50. Going into the interior of the earth the weight of an object
A. Increases
B. Decreases
C. Remains unchanged
D. First increases and then decreases
Answer : A