Q. A level of atmosphere which is composed partly of Electrons and Positive Ions is called

Correct Answer

Ionosphere

More Questions on Atmosphere

  • Q. With reference to the sub-tropical high pressure belt, consider the following statements: 1. It is affected by Earth’s rotation and descent of winds from higher altitudes. 2. It is dynamically induced and characterized with anti-cyclonic conditions. Which of the statement(s) given above is/are correct?
    A)2 only
    B)1 only
    C)Both 1 and 2
    D)Neither 1 nor 2
    Answer: 2 only
  • Q. Where is Ozone layer found?
    A)Stratosphere
    B)Troposphere
    C)Ionosphere
    D)Exosphere
    Answer: Stratosphere
  • Q. Which one of the following layers of the atmosphere is responsible for the deflection of radio waves?
    A)Mesosphere
    B)Troposphere
    C)Stratosphere
    D)Ionosphere
    Answer: Ionosphere
  • Q. Dew point is ________
    A)A low pressure system in lower atmosphere
    B)Amount of actual water vapour present per unit volume of air
    C)Incoming solar radiation
    D)A temperature at which a given sample of air becomes saturated
    Answer: A temperature at which a given sample of air becomes saturated
  • Q. Winds blow ________
    A)From a region of low pressure to a region of high pressure
    B)In regions of low pressure
    C)From a region of high pressure to a region of low pressure
    D)In regions of high pressure
    Answer: From a region of high pressure to a region of low pressure
  • Q. When a descending air contracts and its volume decreases, what happens to its temperature?
    A)Its temperature remains constant
    B)Its temperature decreases
    C)Its temperature increases
    D)Its temperature first increases, then decreases
    Answer: Its temperature increases
  • Q. What is approximately the quantum of the pressure exerted by the atmosphere at sea level?
    A)Five kg per sq cm
    B)One kg per sq km
    C)One kg per sq mtr
    D)Five kg per sq mtr
    Answer: One kg per sq mtr
  • Q. A temperature inversion is most likely to occur under which of the following conditions?
    A)Calm, cloudy and humid night
    B)Mountain top in late evening
    C)Windy but cloudy night
    D)Calm, clear and cool winter night
    Answer: Calm, clear and cool winter night
  • Q. The final boundary between the Earth and the outer space is called
    A)Mesopause
    B)Magnetosphere
    C)Ionosphere
    D)Magnetopause
    Answer: Magnetopause
  • Q. Which of the following characterises the Foehn? I. It is warm II. It is humid III. It is common in the valleys of the northern Alps IV. It blows in winter
    A)I, III and IV
    B)I, II and IV
    C)I, II and III
    D)I, II, III and IV
    Answer: I, III and IV
  • Q. The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is ________
    A)Troposphere, Stratosphere, Mesosphere, Ionosphere
    B)Troposphere, Stratosphere, Ionosphere, Mesosphere
    C)Stratosphere, Troposphere, Ionosphere, Mesosphere
    D)Stratosphere, Troposphere, Mesosphere, Ionosphere
    Answer: Troposphere, Stratosphere, Mesosphere, Ionosphere
  • Q. Freely moving bodies are ________
    A)Deflected upwards at the equator
    B)Deflected to their right in the northern hemisphere
    C)Deflected to the right in the southern hemisphere
    D)Unaffected by the earth's movements
    Answer: Deflected to their right in the northern hemisphere
  • Q. Precipitation takes place when ________
    A)Temperature of moisture in air sharply decreases
    B)The sky is overcast with clouds
    C)Temperature of moisture in air suddenly increases
    D)Winds begin to blow in a circular motion
    Answer: The sky is overcast with clouds
  • Q. Atmospheric humidity is measured by ________
    A)Lysimeter
    B)Psychrometer
    C)Anemometer
    D)Hydrometer
    Answer: Psychrometer
  • Q. The January isotherm taken as a basis for dividing India into tropical and subtropical zones is ________
    A)12° C
    B)21° C
    C)18° C
    D)15° C
    Answer: 15° C
  • Q. The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from ________
    A)Stratosphere
    B)Troposphere
    C)Mesosphere
    D)Ionosphere
    Answer: Ionosphere
  • Q. The hot dry local winds that blow on the eastern side of the Alps Mountain are known as ________
    A)Khamsin
    B)Chinook
    C)Foehn
    D)Sirocco
    Answer: Foehn
  • Q. The most important factor in thunderstorms development is ________
    A)Abundance of moisture
    B)Atmospheric stability
    C)Atmospheric instability
    D)Temperature inversion
    Answer: Atmospheric instability
  • Q. In the Southern hemisphere the Westerlies blow from ________
    A)North west
    B)North
    C)North east
    D)South east
    Answer: North west
  • Q. Troposphere is the most warm part of the atmosphere because
    A)It gets warm from the heat of the surface of the Earth
    B)It is closer to the Sun
    C)It contains charged particles
    D)It produces heat
    Answer: It gets warm from the heat of the surface of the Earth

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