1000+ Astronomy MCQ for SSC CGL [Solved]

1. The word 'satellite' means _____.
A. wanderer
B. settlement
C. light
D. a smaller companion to anything
Answer : D

2. 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

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

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

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

6. The axis of Mars la inclined at an angle of
A. 25°
B. 30°
C. 35°
D. 15°
Answer : A

7. Which of the following statements are true?
1. Inner Planets are alternatively called Terrestrial Planets.
2. Outer Planets are Jupiter, Saturn, Uranus and Neptune. All four Outer Planets are considered as Great Planets.
3. Pluto is also considered as
A. 1, 2 and 4
B. 1 and 4
C. 1, 3 and 4
D. 1, 2, 3 and 4
Answer : A

8. 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

9. 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

10. What is a narrow waterway separating two bits of land called?
A. A bay
B. A gulf
C. A strait
D. An isthmus
Answer : C

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

12. Which planet does take the least time in completing one revolution around the Sun?
A. Earth
B. Venus
C. Mercury
D. Mars
Answer : C

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

14. 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

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

16. The tail of a comet is directed away from the Sun because
A. as the comet rotates around the Sun, the light mass of the comet is pushed away due to the centrifugal force alone
B. as the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail
C. the radiation emitted by the Sun exerts a radial pressure on the comet throwing its tail away from the Sun
D. the tail of the comet always exists in the same orientation
Answer : A

17. 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

18. Our Solar System is an orderly community of _____.
A. One star
B. Two stars
C. Three stars
D. Four stars
Answer : A

19. 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

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

21. 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

22. 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

23. 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

24. 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

25. 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

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

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

28. What is the primary cause of seasonal change on the surface of the earth?
A. Earth's revolution and inclination of its axis
B. Revolution
C. Earth's rotation and inclination of its axis
D. Rotation
Answer : A

29. A leap year consists of
A. 365 days
B. 365 days and 6 months
C. 364 days
D. 366 days
Answer : D

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

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

32. 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

33. Which star has the largest percentage In the universe
A. Single stars
B. Binary stars
C. Multiple stars
D. Cephied stars
Answer : C

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

35. The permanent tilt of the Earth's axis and the revolution of the Earth in its orbit together cause
A. Day and night
B. Varying lengths of day and night at different times of the year
C. Differences in time between places on different meridians
D. The deflection of winds
Answer : B

36. Which of the following is not an astronomical object?
A. Pulsar
B. Brittle Star
C. Black hole
D. Quasar
Answer : B

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

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

39. The difference between day and night increases as one moves
A. From equator to poles
B. From poles to equator
C. From tropics to equator
D. From plains to mountains
Answer : A

40. What is a 'synodic month'?
A. Moon's period of rotation on its axis with respect to the earth.
B. Moon's period of revolution around the earth.
C. Moon's period of revolution with respect to a star at infinity
D. Moon's period of revolution with respect to the Sun
Answer : D

41. 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

42. 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

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

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

46. 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

47. How many degrees north and south are the Tropics?
A. 47 degrees
B. 23.5 degrees
C. 12 degrees
D. 30 degrees
Answer : A

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

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. A celestial body having its own heat and light is called
A. Planet
B. Moon
C. Star
D. Satellite
Answer : C