SSC CGL GEOGRAPHY Atmosphere
1. The ozone layer in the upper part of the atmosphere protects us from :
(a) cosmic rays (b) ultrasonic waves
(c) infra-red rays (d) ultraviolet rays
2. 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
3. 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
4. Temperate cyclones bring along with them:
(a) pleasant weather
(b) snowfall and hail
(c) thunderstorms and torrential rainfall
(d) mild rainfall
5. Doldrums are belts of low atmospheric pressure obtained in the regions adjoining the equator to a distance of :
(a) 5 degree latitude towards the north only
(b) 5 degree latitude towards the south only
(c) 15 degree latitude towards north and south
6. Doldrums are :
(a) high latitudes with heavy snow
(b) equatorial zone with low pressure
(c) high pressure areas on mountains
(d) sub-polar zone with high pressure
7. Atmospheric pressure exerted on earth is due to :
(a) Gravitational pull of the earth
(b) Rotation of earth
(c) Revolution of earth
(d) Uneven heating of earth
8. The Sea breeze blows during :
(a) day from land to sea
(b) day from sea to land
(c) night from land to sea
(d) night from sea to land
9. The instrument used for finding out wind-direction is:
(a) anemometer (b) wind vane
(c) wind gauze (d) hygrometer
10. Lapse rate is related to the decrease of:
(a) wind velocity with an ascent of 300 feet
(b) humidity with an ascent of 450 feet
(c) temperature at IT for an ascent of 330 feet
(d) pressure with an ascent of 500 feet
11. The Trade winds are caused by:
(a) rotation of the earth
(b) revolution of the earth
(c) inflowing movement of air along the earth’s surface towards the equator
(d) none of these
12. 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
13. Very strong and cold icy winds that blow in the Polar regions are called :
(a) typhoons (b) tornadoes
(c) blizzards (d) polar winds
14. The plane of contact of the troposphere and stratosphere is known as:
(a) mesosphere (b) ionosphere
(c) stratopause (d) tropopause
15. Increase in carbon dioxide in atmosphere causes :
(a) rise in earth temperature
(b) fall in earth temperature
(c) uniform earth temperature
(d) increase in Ultraviolet rays
16. In the Southern hemisphere the Westerlies blow from :
(a) north (b) north east
(c) north west (d) south east
17. Which of the following sequences of atmospheric layers is correct from below?
(a) Stratosphere, Ionosphere, Tropopause, Troposphere
(b) Ionosphere, Troposphere, Stratosphere, Tropopause
(c) Troposphere, Tropopause, Stratosphere, Ionosphere
(d) Tropopause, Troposphere, Ionosphere, Stratosphere
18. The layer of the atmosphere which provides ideal conditions for flying of jet aeroplanes is:
(a) troposphere (b) stratosphere
(c) Ionosphere (d) exosphere
19. The amount of Albedo in the atmosphere is about :
(a) 50% (b) 42%
(c) 37% (d) 15%
20. Which one of the following constituents of the atmosphere causes greatest changes in climate and weather ?
(a) Nitrogen (b) Oxygen
(c) Ozone (d) Water Vapour
21. The instrument used for measuring relative humidity in air is:
(a) hygrograph (b) hydrograph
(c) pantograph (d) barograph
22. Frontal rain is caused by :
(a) convection currents
(b) winds from sea
(c) cyclonic activity
(d) condensation of water evaporated from mountains
23. A type of rainfall which occurs when wind rises up along a hill or mountain barrier is called :
(a) anti-cyclonic (b) convectional
(c) cylonic (d) orographic
24. Dew point is :
(a) amount of actual water vapour present per unit volume of air
(b) Incoming solar radiation
(c) a low pressure system in lower atmosphere
(d) a temperature at which a given sample of air becomes saturated
25. ‘Cloud burst’ means :
(a) abnormally heavy downpour of rain associated with a thunderstorm
(b) formation of artificial rain
(c) presence of scattered flakes of cloud in the sky
(d) sowing of seeds of a crop in a cloudy weather
26. The amount of actual water vapour of air is known as
(a) absolute humidity (b) dew point
(c) relative humidity (d) condensation point
27. Smog is likely to occur :
(a) around valleys
(b) near lakes
(c) on calm, clear and cool nights
(d) near the industrial areas
28. Match the following
A. Doldrums 1. 5ºN to 5ºS
B. Horse Latitudes 2. 30º N to 30ºS
C. Torrid zone 3. 40º and 50º S
D. Roaring 4. 23½º N and 23½º S
A B C D
(a) 1 2 3 4
(b) 1 2 4 3
(c) 2 1 3 4
(d) 2 1 4 3
29. Which of the following is/are correct in matching the layer of atmosphere and its characteristic?
I. Troposphere : weather phenomena
II. Stratosphere : ozone layer
III. Ionosphere : radio waves reflected to earth’s surface
IV. Mesosphere : Aurorae
(a) I, II, III and IV
(b) I, II, and IV
(c) II and III
(d) I, II and III
30. Heat gain through insolation and heat loss through terrestrial radiation are equal approximately at which latitude?
(a) 22½º North and South
(b) 40° North and South
(c) 90° North and South
(d) 66½º North and South
31. Fogs formed along the sea-coast are due to :
(a) Advection (b) Radiaton
(c) Convection (d) Conduction
32. In the atmosphere of the primitive earth there was no :
(a) oxygen (b) carbon dioxide
(c) nitrogen (d) ammonia
33. Match the following:
A. Chinook winds 1. bring bitterly cold conditions
B. Polar Easterlies 2. most regular and constant
C. Trade 3. snow eaters Winds
D. Westerlies 4. stormy and powerful in Southern hemisphere
Codes:
A B C D
(a) 4 1 2 3
(b) 3 1 4 2
(c) 1 3 2 4
(d) 3 1 2 4
34. At low elevation which among the following clouds are to be found?
(a) Cirrus (b) Nimbus
(c) Cumulus (d) Stratus
35. Which of the following colour types do not indicate fair or fine weather ?
(a) Cirrus (b) Cumulus
(c) Altocumulus (d) Cumulonimbus
36. Which one among the following is a high cloud?
(a) Cirrus (b) Cumulonimbus
(c) Nimbostratus (d) Stratus
37. Which one of the following is a type of planetary wind ?
(a) Monsoons (b) Loo
(c) Westerlies (d) Tornadoes
38. Which of the following is a cold wind :
(a) Buran (b) Foehn
(c) Chinook (d) Sirocco
39. Which of the following has the highest wind velocity ?
(a) Leo (b) tropopause
(c) Typhoon (d) Hurricane
40. Local thunderstorms ‘Norwesters’ are prominent in:
(a) Punjab (b) West Bengal
(c) Andhra Pradesh (d) Tamil Nadu
41. The dense mass of small water drops on smoke particles in the lower layers of the atmosphere is :
(a) smog (b) frost
(c) fog (d) dew
42. Cyclonic rainfall largely occurs in :
(a) Egypt (b) India
(c) U.K (d) Mexico
43. Which one of the following islands receives convectional rainfall?
(a) Cyprus (b) Sumatra
(c) Cuba (d) Greenland
44. Which one of the following is not a form of precipitation ?
(a) Fog (b) Hall
(c) Snowfall (d) Rainfall
45. Which of the following is a hot wind ?
(a) Mistral (b) Pampero
(c) Buran (d) Zonda
46. 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
47. The clouds extending from one side of horizon to other as a dark grey sheet having uniform base are called:
(a) Stratus clouds (b) Cumulus clouds
(c) Cirrus clouds (d) Nimbus clouds
ANSWER KEY
