Astronomy 1000+ MCQ with answer for ISRO Recruitment

1. 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

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

3. Sun-rays reaches earth in (approximately)
A. 8 seconds
B. 8 minutes
C. 4.3 seconds
D. 1 light year
Answer : B

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

5. 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

6. 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

7. 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

8. The study of universe on grand scale is called.
A. Cosmology
B. Astronomy
C. Astrology
D. Exbiology
Answer : A

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

10. 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

11. 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

12. 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

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

14. 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

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

16. 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

17. 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

18. The date on which the Sun is vertical over the 'Tropic of Capricorn' is
A. December-22
B. March-21
C. June-21
D. September-23
Answer : A

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

20. 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

21. How much is the variation In distance between the Earth and the Sun during aphelion and perihelion?
A. 5000000 km
B. 500000 km
C. 50000 km
D. 5000 km
Answer : A

22. 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

23. 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

24. The atmospheric� pressure on the surface of Venus is more than__ times the atmospheric pressure of the Earth.
A. 90
B. 80
C. 50
D. 100
Answer : A

25. 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

26. 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

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

28. What meridian is the International Date Line?
A. The 180° meridian
B. The O° meridian
C. The 90° meridian
D. The 135° meridian
Answer : A

29. 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

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

31. 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

32. 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

33. 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

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

35. 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

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

37. 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

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

39. 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

40. 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

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

42. The group of small pieces of rock revolving round the Sun between the orbits of Mars and Jupiter are called
A. meteors
B. comets
C. meteorites
D. asteroids
Answer : D

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

44. 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

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

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

47. 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

48. Average temperature of the Earth is.
A. 14°C
B. 24°C
C. 34°C
D. 20°C
Answer : A

49. Which of the following is 'the cruel planet' in Indian astrology?
A. Jupiter
B. Saturn
C. Uranus
D. Neptune
Answer : B

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