The cold and dense air blowing down the mountain slope during the night is known as ________
A. Anabatic wind
B. Khamsin
C. Katabatic wind
D. Harmattan
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The layer of atmosphere which reflects radio waves is
A. Ionosphere
B. Troposphere
C. Stratosphere
D. Exosphere
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Venus has atmosphere made up of
A. Ammonia
B. Carbon dioxide
C. Helium
D. Hydrogen
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The core of the Earth is also known as
A. Lithosphere
B. Mesosphere
C. Barysphere
D. Centrosphere
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The capacity of the Atmosphere to hold water vapour
A. Increases as the temperature increases
B. Decreases as the temperature increases
C. Increases as the temperature decreases
D. Decreases as the temperature decreases
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Northern part of Australia is typified by which one of the following?
A. Equatorial climate
B. Mediterranean climate
C. Temperate climate
D. Monsoon climate
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Mist is a result of which one of the following?
A. Condensation
B. Evaporation
C. Sublimation
D. Saturation
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The instrument used for measuring relative humidity in air is ________
A. Hygrometer
B. Hydrograph
C. Pantograph
D. Barograph
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The hot dry local winds that blow on the eastern side of the Alps Mountain are known as ________
A. Chinook
B. Foehn
C. Khamsin
D. Sirocco
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The contact of two air masses differing sharply in humidity originates:
A. Tropical cyclones
B. Inter-tropical convergence
C. Temperate cyclones
D. Tropospheric instability
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Frontal rain is caused by ________
A. Convection currents
B. Winds from sea
C. Cyclonic activity
D. Condensation of water evaporated from mountains
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When the relative humidity is 50% and air temperature is 30°C, a cooling of air mass ________
A. Raises the absolute humidity
B. Produces no change in relative humidity
C. Decreases the relative humidity
D. Increases the relative humidity
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Which of the following statements characterize the anticyclones?
1. Anticyclones are low pressure systems.
2. They are characterized by divergent wind circulation.
3. They are indicative of dry weather conditions.
Select the correct answer using the codes given below
A. 2 and 3
B. 1 and 3
C. 1, 2 and 3
D. 1 only
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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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In the northern hemisphere, currents are deflected to their right due to ________
A. Centrifugal force
B. Coriolis force
C. Cyclonic storms
D. None of these
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Which of these statements are correct regarding the atmosphere of the earth:
1. It is enveloping the earth because of gravity.
2. Its density decreases with increasing height from the surface of the earth.
3. Its characteristic composition is same throughout its height.
4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere.
A. 1 and 4
B. 2 and 4
C. 2, 3 and 4
D. 1, 2 and 4
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Which are of the following is wrongly characterised?
A. Chinook- Canada - winter - warm
B. Khamsin – Egypt – spring - hot
C. Sirocco – Sahara – spring - hot
D. Mistral - Rhone Valley - summer – cold
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When the wind is deflected due to the rotation of the Earth, it is called as ________
A. Geostropic wind
B. Polar wind
C. Westerlies
D. Trade winds
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The innermost layer is the core with a radius of about ________ km.
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The absence of which among the following causes the temperature of the atmosphere to decrease with ascent along with decreasing density of air?
I. Vegetation
II. Water
III. Carbon dioxide
IV. Oxygen
V. Nitrogen
A. I and II
B. III and IV
C. II and III
D. II and V
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