Q 1 – It is an element of atmosphere
(a) Tides
(b) Pressure
(c) Water currents
(d) Waves
(b) Pressure
Q 2 – Which gas is opaque to the outgoing terrestrial radiation?
(a) Dust Particles
(b) Ozone
(c) Carbon dioxide
(d) Water Vapour
(c) Carbon dioxide
Q 3 – The uppermost layer of the atmosphere is
(a) Mesosphere
(b) Exosphere
(c) Ionosphere
(d) Stratosphere
(b) exosphere
Q 4 – Which one of the following gases constitutes the major portion of the atmosphere?
(a) Oxygen
(b) Nitrogen
(c) Argon
(d) Carbon dioxide
(b) Nitrogen
Q 5 – Which of the following gases absorbs ultraviolet rays?
(a) Carbon Dioxide
(b) Neon
(c) Ozone
(d) Nitrogen
(c) Ozone
Q 6 – Excess carbon dioxide in the atmosphere due to pollution will cause
(a) Earth’s temperature to rise
(b) Earth’s temperature to fall
(c) Decrease in weather phenomenon
(d) Ozone layer to become thicker
(a) Earth’s temperature to rise
Q 7 – Which zone separates the troposphere from the stratosphere?
(a) Mesospause
(b) Tropopause
(c) Ionospause
(d) Stratopause
(b) Tropopause
Q 8 – The increase in the volume of carbon dioxide for the past few decades is mainly due to
(a) deforestation
(b) climate change
(c) atmospheric composition
(d) burning of fossil fuels
(d) burning of fossil fuels.
Q 9 – The increase in the volume of carbon dioxide for the past few decades is mainly due to
(a) deforestation
(b) climate change
(c) atmospheric composition
(d) burning of fossil fuels
(c) Atmosphere
Q 10 – The radiations that heat earth’s atmosphere, comes from the
(a) Sun
(b) Earth
(c) Ionosphere
(d) Sun and Earth
(b) Earth
Q 11 – Atmospheric layer important for human beings is:
(a) Stratosphere
(b) Mesosphere
(c) Troposphere
(d) Ionosphere.
(c) Troposphere
Q 12 – Sea salt, pollen, ash, smoke soot, fine soil hese are associated with:
(a) Gases
(b) Dust particles
(c) Water vapour
(d) Meteors
(b) Dust particles
Q 13 – Oxygen gas is in negligible quantity at the height of atmosphere:
(a) 90 km
(b) 120 km
(c) 100 km
(d) 150 km.
(b) 120 km
Q 14 – Which one of the following gases is transparent to incoming solar radiation and opaque to outgoing terrestrial radiation?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Carbon dioxide
(d) Carbon dioxide.
Q 15 – Which of the following is an important component of atmosphere?
(a) Water vapours
(b) Dust particles
(c) Gases
(d) All of the above.
(d) All of the above
Q 16 – What is the upper layer of mesosphere called?
(a) Mesosphere
(b) Ionosphere
(c) Troposphere
(d) Stratosphere.
(a) Mesosphere
Q 17 – Which layer of atmosphere has electronically charged particles?
(a) Mesosphere
(b) Ionosphere
(c) Troposphere
(d) Stratosphere
(b) Ionosphere
Q 18 – Which of the following is the uppermost layer of the atmosphere?
(a) Exosphere
(b) Ionosphere
(c) Troposphere
(d) Stratosphere.
(a) Exosphere
(a) Exosphere
Q 19 – Which of the following is the lowest layer of the earth?
(a) Mesosphere
(b) Ionosphere
(c) Troposphere
(d) Stratosphere.
(c) Troposphere
Q 20 – The air is an integral part of the earth’s mass and 99 per cent of the total mass of the atmosphere is confined to the height of how many km from the earth’s surface?
(a) 10 km
(b) 12 km
(c) 24 km
(d) 32 km.
(d) 32 km
Q 21 – To what height carbon dioxide and water vapours are found in atmosphere?
(a) 60 km
(b) 75 km
(c) 90 km
(d) 100 km.
(c) 90 km
Q 22 – To what height is ozone found?
(a) 10 to 50 km
(b) 5 to 60 km
(c) 30 to 80 km
(d) 40 to 90 km.
(a) 10 to 50 km
Q 23 – Which of the following layer of atmosphere is most important for life?
(a) Nitrogen
(b) Oxygen
(c) Ozone
(d) Carbon dioxide.
(c) Ozone
Q 24 – What are causes behind increasing density of carbon dioxide?
(а) Burning of fossil fuels
(b) Killing animals
(c) Exploitation of minerals
(d) Ozone layer depletion.
a) Burning of fossil fuels
Q 25 – Atmosphere contains
(a) oxygen
(b) nitrogen
(c) dust particles
(d) all of them
(d) all of them
Q 26 – Which gas is essential for breathing?
(a) nitrogen
(b) oxygen
(c) carbon dioxide
(d) none of these
(b) oxygen
Q 27 – What is the percentage of air in the atmosphere?
(a) 32
(b) 99
(c) 0.1
(d) 21
(b) 99
Q 28 – At what height will oxygen be almost in negligible quantity?
(a) 120 km.
(b) 90 km.
(c) 18 km.
(d) 60 km.
(a) 120 km
Q 29 – What is the % of nitrogen in the atmosphere?
(a) 20.95%
(b) 78.08%
(c) 20%
(d) 80%
(b) 78.08%.
Q 30 – Which gas is present in large amount in the atmosphere?
(a) oxygen
(b) hydrogen
(c) nitrogen
(d) carbon dioxide
(c) nitrogen.
Q 31 – Name the gas which is useful for plants
(a) oxygen
(b) carbon dioxide
(c) argon
(d) hydrogen
(b) carbon dioxide.
Q 32 – Which gas is found as a trace in the atmosphere?
(a) oxygen
(b) nitrogen
(c) carbon dioxide
(d) xenon
(d) xenon.
Q 33 – What percentage of carbon dioxide is found in air?
(a) 0.036%
(b) 0.93%
(c) 0.002%
(d) 0,3%
(a) 0.036%.
Q 34 – What percentage of oxygen is found in the air?
(a) 20.95
(b) 21.95
(c) 78.08
(d) 80.08
(a) 20.95.
Q 35 – Which gas acts as a filter and protects us from the ultra violet rays?
(a) oxygen
(b) nitrogen
(c) ozone
(d) carbon dioxide
(c) ozone
Q 36 – Which layer of the atmosphere is useful for various biological activities?
(a) stratosphere
(b) troposphere
(c) ionosphere
(d) none of these
(b) troposphere.
Q 37 – Which one is the variable gas in the atmosphere?
(a) carbon dioxide
(b) water vapour
(c) dust particles
(d) smoke
(b) water vapour.
Q 38 – Which layer of the atmosphere is free from water vapours and clouds?
(a) troposphere
(b) stratosphere
(c) mesosphere
(d) exosphere
(b) stratosphere.
Q 39 – The zone separating troposphere from stratosphere is known as
(a) tropopause
(b) stratopause
(c) mesopause
(d) none of these
(a) tropopause
Q 40 – Upto what height does the stratosphere extend?
(a) 60 km.
(b) 80 km.
(c) 50 km.
(d) 120 km.
(c) 50 km.