1000+ Astronomy MCQ for DRDO [Solved]

1. When dees the Summer Solstice occur?
A. July 23
B. June 21
C. May 20
D. April 31
Answer : B

2. 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

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

4. What is the name given to the widened rivermouth found at the point a river enters the sea?
A. Estuary
B. Bay
C. Gulf
D. Delta
Answer : A

5. What do you call a narrow neck oC land that connects two larger landmasses?
A. Peninsula
B. Isthmus
C. Cape
D. Strait
Answer : B

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

7. 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

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

9. 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

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

12. 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

13. 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

14. 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

15. 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

16. 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

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

18. 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

19. Which two Planets do not have any satellites?
A. Venus and Mercury
B. Venus and Uranus
C. Venus and Neptune
D. Mercury and Uranus
Answer : A

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

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

22. 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

23. 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

24. Arrange the Inner Planets in decreasing order of their distances from the Sun.
1. Earth
2. Mercury
3. Venus
4. Mars
5. Neptune
A. 1, 4, 3, 2
B. 4, 2, 1, 3
C. 4, 1, 2, 3
D. 4, 1, 3, 2
Answer : D

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

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

27. 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

28. In which direction la the Tropic oC Capricorn in relation to the Equator?
A. North
B. South
C. East
D. West
Answer : B

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

30. 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

31. Which planet rotates on its axis from north to south?
A. Uranus
B. Venus
C. Mars
D. Pluto
Answer : A

32. 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

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

35. 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

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

37. 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

38. 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

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

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

41. 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

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

43. 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

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

45. 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

46. 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

47. 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

48. 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

49. 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

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