Basic Science - Geography (Atmosphere) MCQ's




All Questions are from Year - 2018 or older

Question 1 :
Doldrums is a [NDA 2011]

  1. Tropical wind belt
  2. Tropical wind deflection belt
  3. Sub-tropical wind belt
  4. Tropical no-wind belt
  

Question 2 :
Consider the following statements: 1. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean. 2. The annual range of temperature is greater in the Northern Hemisphere than that in the Southern Hemisphere. Which of the statements given above is/are correct? [IAS 2007]

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

Question 3 :
Which of the following is wrongly matched?

  1. Rainfall caused by mountain standing in the way of moisture - laden winds - relief rainfall
  2. Rain caused by vertical circulation of air currents - orographic rainfall
  3. Rain caused by a warm moist air mass moving upward over cold air mass - cyclonic rainfall
  4. An area sheltered from rain bearing winds by a hill - rain shadow area
  

Question 4 :
A devastating Cloud Burst swept over Leh on August 2010. Which one of the following statements with regard to Cloud Burst is not correct? [CDS 2011]

  1. Cloud Burst is a localized weather phenomenon representing highly concentrated rainfall over a small area in a short duration of time
  2. Cloud Burst occurs due to upward movement of moisture laden air with sufficient rapidity to form cumulonimbus clouds
  3. Cloud Burst occurs only in hilly areas
  4. There is no satisfactory technique till now for predicting Cloud Burst
  

Question 5 :
Which one of the following statements is correct? [IAS 2004] Hurricanes:

  1. form at the equator
  2. are not as large as tornadoes
  3. develop over warm ocean areas
  4. tend to intensify when they move over land surfaces
  

Question 6 :
Precipitation takes place when:

  1. the sky is overcast with clouds
  2. temperature of moisture in air suddenly increases
  3. temperature of moisture in air sharply decreases
  4. winds begin to blow in a circular motion
  

Question 7 :
Which one of the following is a type of planetary wind?

  1. Monsoons
  2. Loo
  3. Westerlies
  4. Tornadoes
  

Question 8 :
Which one among the following statements relating to an anticyclone is correct? [NDA 2011]

  1. Anticyclone is a wind system with a high pressure centre
  2. In anticyclone the movement of wind is inward
  3. The contribution of an anticyclone towards determining weather of an area is quite significant
  4. The movement of wind is clockwise in an anticyclone of southern hemisphere
  

Question 9 :
Lapse rate is related to the decrease of : [IFS 1998]

  1. wind velocity with an ascent of 300 feet
  2. humidity with an ascent of 450 feet
  3. temperature at 1°F for an ascent of 330 feet
  4. pressure with an ascent of 500 feet
  

Question 10 :
Transfer of surplus heat from the lower latitudes to higher latitudes is done by : 1. ocean currents 2. planetary winds 3. tides 4. waves

  1. I and II
  2. III and IV
  3. I and IV
  4. II and III
  

Question 11 :
What is the major role of a greenhouse gas that contributes to temperature rise of the Earth's surface? [CDS 2012]

  1. Transparent to both incoming sunlight and outgoing infrared radiation
  2. Stops both incoming sunlight and outgoing infrared radiation
  3. Lets outgoing infrared radiation pass through but stops incoming sunlight
  4. Lets incoming sunlight' pass through but stops outgoing infrared radiation
  

Question 12 :
Logically, what does a continually rising air pressure indicate? [CDS 2012]

  1. Advent of unsettled and cloudy weather
  2. Advent of a cyclone
  3. Fine and settled weather
  4. Fine and unsettled weather
  

Question 13 :
Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis? [IAS 2008]

  1. Less than 1%
  2. Between 1% and 15%
  3. Between 15% and 2%
  4. More than 2%
  

Question 14 :
Which of the following statements is not true? [UP PCS 2002]

  1. Presence of water vapour is highly variable in the lower atmosphere.
  2. The zone of maximum temperature is located along the equator.
  3. Frigid zones are located in both the hemispheres between the polar circles and the poles.
  4. Jet streams are high altitude winds affecting the surface weather conditions.
  

Question 15 :
At low elevation which among the following clouds are to be found ?

  1. Cirrus
  2. Nimbus
  3. Cumulus
  4. Stratus
  

Question 16 :
Consider the following statements: 1. Mistral is a cold wind blowing in North America. 2. Sirocco is a hot dry wind blowing across the North African coast. Which of the statement(s) given above is/are correct? [IAS 2009]

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

Question 17 :
The chemically inactive gas present in the atmosphere is :

  1. nitrogen
  2. argon
  3. water vapour
  4. oxygen
  

Question 18 :
The form of precipitation in which the raindrops get frozen into ice on coming in contact with a cold layer of air near the earth's surface is called:

  1. fog
  2. hail
  3. sleet
  4. snowfall
  

Question 19 :
Cyclonic rainfall largely occurs in :

  1. Egypt
  2. India
  3. U.K.
  4. Mexico
  

Question 20 :
Which of the following statements about Stratosphere is incorrect?

  1. It is the region in the atmosphere above tropopause
  2. It contains ozone layer which prevents ultraviolet radiations of sun from reaching to the earth
  3. It is not free from the violent weather changes occurring on the earth
  4. It provides ideal flying conditions
  

Question 21 :
A type of rainfall which occurs when wind rises up along a hill or mountain barrier is called: [NDA 2004]

  1. anti-cyclonic
  2. convectional
  3. cyclonic
  4. orographic
  

Question 22 :
Which of the following statements is not true of Trade Winds?

  1. They blow from the Horse Latitudes to the Doldrums
  2. They are deflected to the right to become South-East Trades in the southern hemisphere
  3. they are constant in strength and direction
  4. They sometimes contain intense depressions
  

Question 23 :
Water vapour beyond the dew point results in: [NDA 1994]

  1. precipitation
  2. hailstorm
  3. condensation
  4. formation of ice
  

Question 24 :
What helps to maintain the heat budget on the surface of the earth?

  1. Incoming insolation in short waves and terrestrial radiation in long waves
  2. The atmosphere absorbs heat
  3. Incoming solar radiation is reflected
  4. The earth absorbs heat
  

Question 25 :
Freely moving bodies are:

  1. deflected to their right in the northern hemisphere
  2. deflected to the right in the southern hemisphere
  3. deflected upwards at the equator
  4. unaffected by the earth's movements
  

Question 26 :
The cold and dense air blowing down the mountain slope during the night is known as:

  1. anabatic wind
  2. khamsin
  3. katabatic wind
  4. harmattan
  

Question 27 :
The portion of the atmosphere which extends from the earth's surface upto 6-8 miles and experiences decrease in temperature at constant rate is : [NDA 1990]

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

Question 28 :
Consider the following statements regarding general characteristics associated with tropical cyclones - 1. Tropical cyclones move with very low velocity over the oceans but become strong while moving over the land areas. - 2. They are confined to a particular period of the year (mainly summer) and normally move from east to west. Which of the statement(s) given above is/are correct? [IAS 2009]

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

Question 29 :
Evening sun is not a shot as the mid-day sun. What is the reason? [NDA 2008]

  1. In the evening, radiations travel slowly
  2. In the evening, the temperature of the sun decreases
  3. Ozone in atmosphere absorbs more light in the evening
  4. In the evening, radiations travel larger distance through atmosphere
  

Question 30 :
In the northern hemisphere, the wind blowing from the Horse latitudes to the Doldrums is called: [NDA 1994]

  1. Westerly wind
  2. Trade wind
  3. Polar Easterly
  4. Jet Stream
  
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