Basic Science - Geography (Atmosphere) MCQ's




All Questions are from Year - 2018 or older

Question 31 :
When the wind is deflected due to the rotation of the Earth, it is called as: [NDA 1994]

  1. geostropic wind
  2. polar wind
  3. westerlies
  4. trade winds
  

Question 32 :
In the Southern hemisphere the Westerlies blow from :

  1. north
  2. north east
  3. north west
  4. south east
  

Question 33 :
The dense mass of small water drops on smoke particles in the lower layers of the atmosphere is :

  1. smog
  2. frost
  3. fog
  4. dew
  

Question 34 :
The most important factor in thunderstorms development is: [IAS 2003]

  1. atmospheric stability
  2. atmospheric instability
  3. abundance of moisture
  4. temperature inversion
  

Question 35 :
Consider the following statements: 1. The variation in average annual range of temperature at1 5° latitude of Southern Hemisphere is much less than that at 15° latitude of Northern Hemisphere. 2. At latitudes pole ward of 35° the incoming radiation exceeds the outgoing radiation in. Northern Hemisphere, whereas in Southern Hemisphere the outgoing radiation exceeds the incoming radiation. Which of the statements given above is/are correct? [IAS 2007]

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
  

Question 36 :
What is a cloudburst? [CDS 2012]

  1. It refers to sudden and copious rainfall over a small area which often lasts for only a few minutes
  2. it refers to 50mm rain over a period of time
  3. It is caused by rapid condensation of very high clouds
  4. It refers to a thunderstorm with little rain
  

Question 37 :
Which one of the following is not a correct example of tropical cyclone? [NDA 1994]

  1. Tornadoes
  2. Typhoons
  3. Hurricanes
  4. Nor westers
  

Question 38 :
Consider the following statements: 1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface. 2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface. Which of the statements given above is/are correct? [IAS 2008]

  1. 1only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
  

Question 39 :
The Sea breeze blows during: [Senior Observer's Exam 1991]

  1. day from land to sea
  2. day from sea to land
  3. night from land to sea
  4. night from sea to land
  

Question 40 :
Which of the following types of rainfall is often accompanied with lightning and thunder?

  1. Orographic
  2. Convectional
  3. Frontal
  4. None of these
  

Question 41 :
Which one among the following is a high cloud? [NDA 2003]

  1. Cirrus
  2. Cumulonimbus
  3. Nimbostratus
  4. Stratus
  

Question 42 :
Rain shadow effect is associated with [NDA 2011]

  1. Cyclonic rainfall
  2. Orographic rainfall
  3. Convectional rainfall
  4. Frontal rainfall
  

Question 43 :
Which of the following is the annual precipitation of an area?

  1. All forms of precipitation converted to the quantity of liquid water
  2. The total actual amount of rain, snow, hail and sleet
  3. The total amount of rain per year, irrespective of snow, hail and sleet
  4. All forms of precipitation measured after conversion to equal quantity of ice
  

Question 44 :
The January isotherm taken as a basis for dividing India into tropical and subtropical zones is : [IAS 1997]

  1. 21° C
  2. 18° C
  3. 12° C
  4. 15° C
  

Question 45 :
Relative humidity of the atmosphere is directly affected by :

  1. change in atmospheric pressure
  2. change in atmospheric temperature
  3. change in the direction of winds
  4. none of these
  

Question 46 :
Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere. Why? 1. Southern hemisphere has less landmass as compared to northern hemisphere. 2. Coriolis force is higher in southern hemisphere as compared to northern hemisphere. Which of the statements given above is fare correct? [CSAT 2011]

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
  

Question 47 :
Warm dry winds blowing down the east slopes of Rockies are known as : [NDA 1992]

  1. Mistral
  2. Nor' westers
  3. Foehn
  4. Chinook
  

Question 48 :
Which of the following statements is incorrect?

  1. Roaring forties are the southern latitudes where Westerlies are prevalent
  2. Monsoons are local seasonal winds
  3. Doldrum belt lies between 10°N and 10°S latitudes
  4. Horse latitudes are found between Trade winds and Westerlies
  

Question 49 :
Dew point is: [NDA 1991]

  1. amount of actual water vapour present per unit volume of air
  2. incoming solar radiation
  3. a low pressure system in lower atmosphere
  4. a temperature at which a given sample of air becomes saturated
  

Question 50 :
The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from:

  1. troposphere
  2. mesosphere
  3. stratosphere
  4. ionosphere
  

Question 51 :
What is the correct sequence of the given clouds from low to high altitudes? [CDS 2001]

  1. Stratus, Cumulonimbus, Cirrostratus, Cirrus
  2. Stratus, Cirrostratus, Cumulonimbus, Cirrus
  3. Cumulonimbus, Stratus, Cirrus, Cirrostratus
  4. Cumulonimbus, Stratus, Cirrostratus, Cirrus
  

Question 52 :
Which one of the following is the cloud that is dark-grey or black, found at very low height and brings the real rain? [CDS 2004]

  1. Altocumulus
  2. Cirrus
  3. Cirrostratus
  4. Nimbostratus
  

Question 53 :
‘Beaufort Scale’ is used to measure:

  1. air pressure
  2. wind velocity
  3. wind direction
  4. humidity
  

Question 54 :
Arrange the following gases of the atmosphere in increasing order by volume: 1. Nitrogen 2. Oxygen 3. Carbon dioxide 4. Argon

  1. I, II, III, IV
  2. l, II, IV, III
  3. III, IV, II, I
  4. IV, III, II, I -
  

Question 55 :
An upper air wind system with very high velocities in certain parts of the atmosphere is called:

  1. a cyclone
  2. an anticyclone
  3. jet stream
  4. a tsunami
  

Question 56 :
A layer in the Earth's atmosphere called Ionosphere facilitates radio communication. Why? 1. The presence of ozone causes the reflection of radio waves to Earth. 2. Radio waves have a very long wavelength. Which of the statements given above is fare correct? [CSAT 2011]

  1. 1only
  2. 2 only
  3. Both 1and 2
  4. Neither 1 nor 2
  

Question 57 :
The albedo of which one among the following is the highest? [IAS 2008]

  1. Cirrus cloud
  2. Cumulonimbus cloud
  3. Melting snow
  4. Sand
  

Question 58 :
Compared to other slopes in the northern hemisphere which is the warmest?

  1. East facing
  2. South facing
  3. North facing
  4. West facing
  

Question 59 :
Which of the following is/are characteristic of a depression in the southern hemisphere? 1. It is a mass of air whose isobars form an oval or circular shape 2. Pressure is high in the centre and decreases towards the outside 3. Air moves anti-clockwise

  1. I only
  2. II only
  3. I and III
  4. All three
  

Question 60 :
The contact of two air masses differing sharply in humidity originates: .[CDS 2001]

  1. tropical cyclones
  2. inter-tropical convergence
  3. temperate cyclones
  4. tropospheric instability
  
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