ATMOSPHERE MCQS SET 09

ATMOSPHERE MCQS SET 09

81) Which one of the following statements is correct?
Hurricanes:
A) form at the equator
B) are not as large as tornadoes
C) develop over warm ocean areas
D) tend to intensify when they move over land surfaces

Answer: develop over warm ocean areas
   
82) The instrument used for measuring relative humidity in air is:
A) hydrograph
B) pantograph
C) barograph
D) hygrograph

Answer: hydrograph
   
83) The ionosphere contains ionized air that protects the earth from
A) the ultraviolet rays of the sun
B) the infrared rays of the sun
C) the falling meteorites
D) None of the above

Answer: the falling meteorites
   
84) Atmospheric humidity is measured by:
A) Psychrometer
B) Anemometer
C) Lysimeter
D) Hydrometer

Answer: Psychrometer   
85) Frontal rain is caused by:
A) convection currents
B) cyclonic activity
C) winds from sea
D) condensation of water evaporated from mountains

Answer: cyclonic activity

86) A sudden fall in the barometric reading indicates:
A) rain
B) fine weather
C) storm
D) extreme cold

Answer: storm
   
87) Relative humidity of the atmosphere is directly affected by:
A) change in atmospheric temperature
B) change in atmospheric pressure
C) change in the direction of winds
D) none of these

Answer: change in atmospheric temperature
   
88) A type of rainfall which occurs when wind rises up along a hill or mountain barrier is called:
A) anti-cyclonic
B) orographic
C) convectional
D) cyclonic

Answer: orographic
   
89) 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:
A) fog
B) hall
C) sleet
D) snowfall

Answer: sleet
   
90) Choose the incorrect statement:
A) Capacity of air to hold moisture decreases with a rise in temperature of the air
B) Absolute humidity is expressed in grams per cubic metre of air
C) The air pressure decreases with an increase in temperature
D) With an ascent of every 165 metres, the temperature is reduced by 1∘ C

Answer: Absolute humidity is expressed in grams per cubic metre of air