61). Which one of the following statements is correct?
A). Jet streams are best developed in winters |
B). Jet streams have often developed oscillations |
C). Jet streams greatly influence our surface weather |
D). All the above three are correct in respect of jet streams |
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62). Arrange the following gases of the atmosphere in increasing order by volume: I. Nitrogen ll. Oxygen lll. Carbon dioxide IV. Argon
A). I, II, III, IV |
B). I, II. IV, III |
C). III, IV, ll, I |
D). IV, Ill, II, I |
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63). Land masses are heated and cooled much faster than water bodies. Identify the true statements in this regard: I. Land gets heated by conduction ll. Water has higher specific heat Ill. Only the surface layers of water are heated. IV. Water gets heated by convection
A). I. II and Ill |
B). II and Ill |
C). l and IV |
D). I, II and IV |
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64). When can one record the lowest temperature of air?
A). At midnight |
B). Just before sunrise |
C). At 3 a.m. |
D). No fixed time |
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65). What helps to maintain the heat budget on the surface of the earth?
A). The atmosphere absorbs heat |
B). Incoming solar radiation is reflected |
C). Incoming insolation in short waves and terrestrial radiation in long waves |
D). The earth absorbs heat |
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66). The water content in the atmosphere:
A). is independent of temperature |
B). increases as temperature increases |
C). decreases as temperature increases |
D). either increases or decreases with temperature increase |
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67). An upper air wind system with very high velocities in certain parts of the atmosphere is called:
A). a cyclone |
B). an anticyclone |
C). jet stream |
D). a tsunami |
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68). Which one of the following conditions is NOT necessary for precipitation to occur?
A). The air must be warm |
B). The air must be saturated |
C). The air must be cooled below its dew point |
D). The air must contain hygroscopic particles |
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69). Very strong and cold icy winds that blow in the Polar regions are called:
A). typhoons |
B). tornadoes |
C). blizzards |
D). polar winds |
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70). The infrared radiation by sun are strongly absorbed by
A). carbon dioxide |
B). water vapours |
C). carbon dioxide and water vapours |
D). ozone |
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