Environmental Science
The protective ozone shield is to be found in the:
Hydrosphere
Ionosphere
Stratosphere
Troposphere
Hydrosphere
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Carbosphere comprisesA. Atmosphere
B. Lithosphere
C. Hydrosphere
D. All of the above
Most of the meteors burns in _________.
A. Stratosphere
B. Mesosphere
C. Troposphere
D. Thermosphere
Ingredients of atmosphere present in minute quantities but essential for maintaining life on earth are
A. Ozone and oxygen
B. Ozone and CO
C. Carbon dioxide and water
D. Carbon dioxide, ozone and water vapours
In which layer of the atmosphere is the ozone present ?
A. Mesosphere
B. Troposphere
C. Stratosphere
D. Ionosphere
UV radiations in the stratosphere are absorbed by
A. Oxygen
B. Ozone
C. Sulphur dioxide
D. Argon
In thermosphere the temperature
A. Rises with height to C
B. Rises with height to C
C. First decreases then rises
D. Decreases to – C
Theย thickness of troposphere is
A. 12 km
B. 40km
C. 8o km
D. 50 km
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