Astronomy 1000+ MCQ with answer for RBI Assistant

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

2. How much Is the average distance of the Sun from the Earth?
A. 150 million km
B. 145 million km
C. 155 million km
D. 140 million km
Answer : A

3. Nearest star from the earth after Sun is
A. Proxima Centaury
B. Alfa Centaury
C. Dog Star
D. Constellation
Answer : A

4. The solar eclipse takes place when
A. The Earth comes between the Sun and the Moon
B. The Moon passes between the Sun and the Earth
C. The Sun comes between the Earth and the Moon
D. The Planets of the Solar System lies on the same plane
Answer : B

5. The term 'syzygy' is referred to when the
A. Earth is at prihelion and Moon at perigee
B. Earth is at aphelion and Moon at apogee
C. Moon and Sun are at right angles with reference to the Earth
D. Moon, Sun and Earth lie along a straight line
Answer : C

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

7. A Light Year measures
A. A unit of velocity
B. A unit of distance
C. A unit of pressure
D. A unit of time
Answer : B

8. What is peninsula?
A. A narrow belt of land
B. A mountainous island
C. A piece of land surrounded by water on three sides
D. A range of hills
Answer : C

9. Shoemaker-Levy 9 is a
A. Meteors
B. Pole Stars
C. Comets
D. Stars
Answer : C

10. What is the distance around the earth at the Equator?
A. 21,000 km
B. 16,800 km
C. 18,600 km
D. 12,500 km
Answer : C

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

12. 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

13. Equatorial circumference of the Earth is
A. 40067 km
B. 50067 km
C. 4067 km
D. 5067 km
Answer : A

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. Speed of the revolution of the earth is___'
A. 100000 km per hour
B. 10000 km per hour
C. 1000 km per hour
D. 100 km per hour
Answer : A

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

17. What is the direction of rotation of the earth on its axis?
A. East to West
B. South to North
C. North to South
D. West to East
Answer : D

18. What is the primary cause of the day and night?
A. Revolution
B. Rotation
C. Inclination of the earth's axis
D. Geoid shape of the earth
Answer : B

19. If the Sun dies It will be transformed Into a
A. White Dwarf
B. Black Dwarf
C. Quasar
D. All of the above
Answer : B

20. Which of the following are the Outer Planets?
1. Jupiter
2. Saturn
3. Uranus
4. Neptune
A. 1 and 2
B. 1, 2and 3
C. 1, 2, 3 and 4
D. 1, 2, 3, 4 and 5
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. 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

23. Which planet is called 'Double Planet'?
A. Venus
B. Uranus
C. Pluto
D. Earth
Answer : C

24. 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

25. Which of the following statements prove(s) that the earth Is spherical?
The Sun rises and sets at different lines in different places.
The shadow cast by the earth on the moon during the lunar eclipse is always circular.
Pictures taken from high alti
A. Only 1
B. 2 and 3
C. I, 2 and 3
D. Only 2
Answer : C

26. Which planet is called 'red planet'?
A. Mars
B. Jupiter
C. Mercury
D. Venus
Answer : A

27. 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

28. What is siderial day?
A. Time taken by the earth to complete one rotation with respect to a fixed star at infinity
B. Time taken by the earth to complete one revolution with respect to the Moon
C. Time taken by the earth to complete one rotation with respect to the Moon
D. Time taken by the earth to complete one rotation with respect to the Sun
Answer : A

29. Planet with maximum satellites is _____.
A. Earth
B. Saturn
C. Jupiter
D. Pluto
Answer : B

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

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

32. An imaginary belt of 12 constellations or group of stars la called
A. Zodiac
B. Steller group
C. Pulsar
D. Zodiacal light
Answer : A

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

34. If the stars are seen to rise perpendicular to the horizon by an observer, he is located on the \
A. Equator
B. Tropic of Cancer
C. South Pole
D. North Pole
Answer : A

35. The word 'planet' means ____.
A. wanderer
B. pollution
C. celestial body
D. heavenly body
Answer : A

36. Largest satellite in Solar System is ____.
A. Moon
B. Ganymede
C. Europa
D. Cheron
Answer : B

37. 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

38. What does perigee mean?
A. The position of the moon farthest from the earth
B. The position of the earth nearest to the Sun
C. The position of the moon nearest to the earth
D. The position of the earth farthest from the Sun
Answer : C

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

40. 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

41. Which star la called the brightest star (Dog star)?
A. Sirius
B. Proxima Centaury
C. Orion
D. Pole Star
Answer : A

42. The length of its day and the tilt of its axis are almost identical to those of the Earth. This is true or
A. Uranus
B. Neptune
C. Saturn
D. Mars
Answer : D

43. Relatively cool spots of the Sun are called __ while relatively hot spots of the Sun are called __.
A. Fusionspot, Facu1ae
B. Sunspot, Faculae
C. Faculae, Sunspot
D. Sunspot, Hotspot
Answer : B

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

45. Which of the following conditions la the most 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

46. 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

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

48. What is the Southern Cross?
A. Position of the Sun during summer solstice
B. Position of the vertical Sun during winter solstice
C. A star showing the position of the South Pole
D. Point of intersection of Antarctic Circle and the Prime Meridian
Answer : C

49. What is the most accurate description of the shape of the earth?
A. a geoid
B. a spherical
C. an oblate sphere
D. a flat disc
Answer : A

50. Sunspots are
A. undulations on the solar surface
B. huge magnetic storms on the solar surface
C. places with adequate sunshine
D. places of tourist importance
Answer : B