Astronomy MCQ Solved Paper for RRB Group D

1. 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

2. Planet with nearly equal rotation and revolution time to the earth is _____.
A. Venus
B. Mercury
C. Uranus
D. Mars
Answer : A

3. 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

4. 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

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

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

8. An ancient star that has collapsed matter so dense that It creates gravitational force so powerful that even light also does not escape. It Is called
A. QSO
B. Black Hole
C. Neutron Star
D. Black Dwarf
Answer : B

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

10. The Sun experiences magnetic storms and this Interferes with the magnetic field oC the Earth and produces light which are called
A. Quasars
B. Polar Auroras
C. Meteorites
D. Pulsar
Answer : B

11. What happens during the equinoxes?
A. The countries along the Equator are in darkness
B. The countries along the Equator are at their hottest
C. The countries along the Equator are at their wettest
D. The Sun shines vertically over the Equator
Answer : D

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

13. To a space traveller stationed in Moon, during the day time the lunar sky will appear
A. Blue
B. White
C. Black
D. Crimson Red
Answer : C

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

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

16. A system of millions and millions of galaxies are called _____.
A. Solar System
B. Universe
C. Space
D. Constellation
Answer : B

17. 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

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

19. Which planet does take the longest time in completing one revolution around the Sun?
A. Uranus
B. Saturn
C. Pluto
D. Neptune
Answer : C

20. 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

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

22. 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

23. 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

24. 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

25. 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

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

27. A celestial body consisting of a gaseous cloud enveloping a bright nucleus moving around the Sun in an elliptical or parabolic orbit so eccentrically that some escapes from the Solar Systems is called
A. Comet
B. Great Bear
C. Meteores
D. Asteroides
Answer : A

28. 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

29. 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

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

31. 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

32. On which date is the Earth in 'aphelion'?
A. July-4
B. December-22
C. September-23
D. June-21
Answer : A

33. 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

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

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

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

37. 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

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

39. 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

40. What is the difference between a lake and a tank?
A. A lake is small and a tank is big
B. A lake has flowing water, a tank has still water
C. A lake is a geographical feature, a tank is not
D. Both are land-enclosed water bodies, but the latter is man-made
Answer : D

41. 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

42. 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

43. The time period elapsing between one New Moon and the next is approximately
A. 8.19 Days
B. 30 days
C. 29.5 Days
D. 61 Days
Answer : C

44. Outside Antarctica, which is the deepest part of the earth?
A. The Dead Sea
B. The Aral Sea
C. The Caspian Sea
D. Lake Baikal
Answer : A

45. 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

46. 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

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

48. When the Sun is vertically overhead along the Tropic of Capricorn at mid-day
A. days and nights are of equal lengths in the Northern Hemisphere
B. Nights are longer than days in the Southern Hemisphere
C. Days and nights are of equal lengths at the poles
D. Night is equal to 24 hours at the North Pole
Answer : D

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

50. 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