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46)The thickness of the troposphere increases in | |||
summer | winter | ||
spring | never changes | ||
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47)The gas in the atmosphere that absorbs ultraviolet rays is | |||
methane | nitrogen | ||
ozone | helium | ||
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48)The fall in temperature with increasing elevation is called | |||
thermal anomaly | thermal reduction | ||
thermal fall | lapse rate | ||
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49)Where is doldrums belt located? | |||
near the equator | near the polar areas | ||
on the tropic of cancer | on the tropic of capricon | ||
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50)What is the name given to the wind blowing from sub tropical high pressure region to the equator? | |||
westerlies | trades | ||
northerlies | doldrums | ||
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51)\'Horse latitudes\' is the name of the | |||
0 degree - 5 degree north and south latitudes | polar circles | ||
30 degree - 40 degree north and south latitudes | 40 degree - 60 degree north and south latitudes | ||
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52)The reason for the fact that stratosphere is ideal for flying jet air craft is | |||
that this layer is rich in ozone which reduces fuel consumption | that the temperature is constant and ideal for aircraft engine efficiency | ||
that this layer is out of the firing range of anti aircraft guns | that the absence of clouds and other weather phenonema | ||
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53)Incoming solar radiation is known as | |||
radiation | refraction | ||
insolation | reflection | ||
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54)The velocity of wind is governed by | |||
Farrel\'s law | pressure gradient | ||
rotation of the earth | temperature | ||
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55)Why does the sky look blue | |||
because the blue light is scattered by dust particle | because blue is the natural colour of the sky | ||
because of the presence of water vapour in the sky | because blue colour has longest wave length | ||
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56)The cause of change of seasons on the earth is | |||
rotation of the earth | revolution and inclination of the earth | ||
rotation of the sun | rotation of the moon | ||
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57)Arrange the planets correctly in descending order in terms of number of their satellites (1) Uranus (2) Jupiter (3) Saturn (4) Mars | |||
2, 3, 1, 4 | 4, 2, 3, 1 | ||
2, 3, 4, 1 | 3, 2, 1, 4 | ||
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58)Identify the sedimentary rocks (1) Basalt (2) Limestone (3) Shale (4) Granite (5) Quartzite | |||
1 and 2 | 2 and 3 | ||
2 and 5 | 3 and 4 | ||
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59)The instrument used for measuring humidity | |||
barometer | thermometer | ||
hygrometer | hydrometer | ||
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60)How much pressure exerted by the atmosphere at the sea level? | |||
one kg per square cm | one pound per square cm | ||
five kg per square cm | two kg per square cm | ||
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