Our Solar System















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1. In order of their distances from the Sun, which of the following planets lie between Mars and Uranus ?

A. Earth and Jupiter
B. Jupiter and Saturn
C. Saturn and Earth
D. Saturn and Neptune
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2. The planet mercury is difficult to be observed most of the time because

A. it gets hidden behind Venus
B. it goest too far away from the Earth
C. it being too close to the Sun, gets hidden by the glare of the Sun
D. It cannot be seen at night as at the time no sunlight falls on it.
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3. Comets revolve around

A. Sun
B. Earth
C. Venus
D. No single heavenly body
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4. Which two planets of the solar system have no satellites ?

A. Mercury and Venusr
B. Venus and Mars
C. Mercury and Mars
D. Venus and Neptune
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5. The length of its day and teh tilt of its axis are almost identical to those of the earth . this is true of

A. Uranus
B. Neptune
C. Jupiter
D. Mars
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6. The hottest planet is

A. Mercury
B. Venus
C. Mars
D. Saturn
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7. Which of the following is the brightest planet?

A.Mercury
B.Venus
C.Mars
D.Saturn
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8. The planet is known as teh Earth's Twin?

A.Saturn
B.Mercury
C.Mars
D.Saturn
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9. Which one of the following planets takes the same number of days for rotation and revolution?

A. Mars
B. Venus
C. Mercury
D. Jupiter
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10. On which of the following of the solar system does the sun rise in the west and set in the east ?

A. Venus
B. Mars
C. Jupiter
D. Saturn
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11. Which of the following planets of the solar system has the longest day?

A. Mercury
B. Jupiter
C. Venus
D. Earth
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12. Which planet looks reddish in the night sky?

A. Mercury
B. Mars
C. Jupiter
D. Saturn
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13. Which of the following is the largest of the inner planets?

A. Venus
B. Mercury
C. Mars
D. Earth
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14. In 1960, Galileo Galilei discoved four moons of which planet?

A. Saturn
B. Jupiter
C. Neptune
D. None of these
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15. The exact time taken by the earth for single rotation on its own axis is

A. 24 hrs
B. 24 hrs 35 sec
C. 23 hrs 50 min 7.2 sec
D. 23 hrs26 min 4.09 sec
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16. A blackhole is a

A. contracted star with intense grivitational pull
B. star with evry low surface temperature
C. star with no atmosphere
D. pulsating star
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17. Great Bear is a

A. Galaxy
B. Planet
C. Star
D. Constellation
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18. Asteroids having their orbits between the planets

A. Mercury and venus
B. Earth and mars
C. Mars and Jupiter
D. Jupiter and Saturn
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19. Halley's comet appears once in a period of

A. 24 years
B. 32 years
C. 76 years
D. 84 years
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20. To a space traveller on moon, the lunar sky during day time appears

A. White
B. Blue
C. Black
D. Red
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21. The distance between the Earth and the Sun ( In milion Kms.)

A. 111
B. 149
C. 168
D. 193
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22. Stars which appear single to the naked eye but are double stars when observed bya telescope, and known as

A. Cosmic stars
B. Quasars
C. Binaries
D. Novae and supernova
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23. What are Sun spots?

A. Regions on earth without winter climate
B. Desert areas on the sun
C. Dark patches onthe surface of the sun which are cooler areas
D. Dark patches on the surface of teh Sun resulting from a localised fall in the temprature to about 4000 k
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24. The brightest star in the sky is

A. Alfa Centari
B. Proxima Centauri
C. Sirius
D. Sun
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25. The out most layer of Sun is called

A. Convection Zone
B. Photosphere
C. Chromosphere
D. Corona
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