21). The approximate diameter of the earth is :
A). 4,200 Km |
B). 6,400 Km |
C). 12,800 Km |
D). 15,600 Km |
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22). The place which has the longest day and the shortest night on 22nd December is :
A). Chennai |
B). Madrid |
C). Melbourne |
D). Moscow |
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23). Geostationary orbit is at a height of :
A). 6 Km |
B). 1000 Km |
C). 3600 Km |
D). 36,000 Km |
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24). Owing to the equatorial bulge and the polar flattening, the polar radius of the earth falls short of the equatorial radius by about :
A). 22 km |
B). 36 km |
C). 41 km |
D). 53 km |
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25). The earth is at the least distance from the sun (Perihelion) on :
A). December 22nd |
B). January 3rd |
C). July 4 th |
D). June 21st |
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26). The earth is at the largest distance from the sun (Aphelion) on :
A). June 21st |
B). January 3rd |
C). July 4 th |
D). September 23rd |
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27). The Earth rotates around an axis pointing towards :
A). the moon |
B). the pole star |
C). the sun |
D). Venus |
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28). Which part of the earth's surface receives the highest amount of insulation?
A). Tropical deserts |
B). Equatorial region |
C). Savannah region |
D). No such criteria |
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29). Density of the core of the earth is expected to be :
A). 2.75 |
B). 5 |
C). 5.68 |
D). 11 or more |
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30). Which of the following layers of the earth is believed to have the heaviest mineral materials of highest density?
A). Central core |
B). Crust |
C). Mantle |
D). Both (b) and (c) |
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