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General Knowledge :: Atmosphere

  1. Which of the following are true regarding ionosphere?
    I. It is the uppermost layer of atmosphere
    II. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized
    III. This layer is responsible for reflecting back the radio wave transmitted from the earth

  2. A.

     I and II

    B.

     I and II

    C.

     II and III

    D.

     I, II and III

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  3. Arrange the following gases of the atmosphere in increasing order by volume:
    I. Nitrogen
    II. Oxygen
    III. Carbon dioxide
    IV. Argon

  4. A.

     I, II, III, IV

    B.

     I, II, IV, III

    C.

     III, IV, II, I

    D.

     IV, III, II, I

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  5. Wind in the Southern hemisphere is deflected towards left due to ________

  6. A.

     Temperature variations

    B.

     Rotation of the earth

    C.

     Difference in pressure

    D.

     Difference in water content

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  7. Local thunderstorms 'Nor westers' are prominent in ________

  8. A.

     Punjab

    B.

     West Bengal

    C.

     Andhra Pradesh

    D.

     Tamil Nadu

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  9. Which of the following winds is incorrectly paired with the area in which it prevails?

  10. A.

     Berg wind - South eastern Africa

    B.

     Karaburan - Tarim basin of Sinkiang

    C.

     Southerly Burster - New South Wales

    D.

     Hurricanes - New Zealand

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  11. Relative humidity

  12. A.

     Increases with increased temperature

    B.

     Decreases with increased temperature

    C.

     Decreases with decreased temperature

    D.

     Has no relation with increase or decrease of temperature

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  13. 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 ________

  14. A.

     Fog

    B.

     Hail

    C.

     Sleet

    D.

     Snowfall

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  15. The term used for the zone at low pressure and light and variable winds in the oceanic equatorial regions is ________

  16. A.

     Depression

    B.

     Doldrums

    C.

     Horse-latitudes

    D.

     Inter-tropical convergence

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  17. In the Southern hemisphere the Westerlies blow from ________

  18. A.

     North

    B.

     North east

    C.

     North west

    D.

     South east

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  19. Choose the incorrect statement ________

  20. A.

     Capacity of air to hold moisture decreases with a rise in temperature of the air

    B.

     The air pressure decreases with an increase in temperature

    C.

     Absolute humidity is expressed in grams per cubic metre of air

    D.

     With an ascent of every 165 metres, the temperature is reduced by 1°C

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