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Question Bank
Questions for ATMOSPHERE
Answer the following questions
Test Mode
Training Mode
1. Lapse rate in the troposphere is produced by _____ and in the stratosphere by ______
rising air; solar radiation
Evaporation; condensation
solar radiation; convection
Terrestrial radiation; solar radiation
2. Tropical Tropopause extends from the equator to Lat.35° - 40°. Over India it is at
14-15 km
20-21 km
16-16.5 km
3. Most of the water vapour in the atmosphere is confined up to
30,000 ft
lower troposphere
Stratosphere
Mid atmosphere
4. Stratosphere extends from Tropopause to
60 km
40 km
50 km
5. CO² and H²O keep the atmosphere
Warm
Cold
Have no effect
6. Nacreous clouds occur in
Upper Stratosphere
Mesosphere
Thermosphere
7. One of the characteristics of our atmosphere is
Equator is warmer than poles above 10 km
Poor conductor of heat and electricity
Lapse rate in the stratosphere is positive
Density is constant above 8 km
8. Temperature at 2 km is 05°C what is ISA deviation. Hint: (Actual - ISA)
03°C
-05°C
-02°C
9. Noctilucent clouds occur in
Thermosphere
Stratosphere
Mesosphere
10. Height of Tropopause at equator is
10-12 km
12-14 km
16-18km
11. The middle atmosphere layer with temperature inversion and stability
Stratosphere
Troposphere
Tropopause
12. In ISA, the mean sea level temperature is
25°C
15°C
10°C
13. In ISA atmosphere the tropopause occurs at a height of
8-10 km
11 km
16-18 km
14. In jet standard atmosphere the Lapse Rate is
2°C/1000 ft
2°C/km
5°C/km
15. The rate of fall of temperatures with height, called
Lapse rate
Inversion rate
Isothermal rate
16. Lowest Layer of atmosphere is
Tropopause
Troposphere
Stratosphere
17. The atmosphere up to 80 km has a nearly similar composition and is called the Homosphere. Its uniform composition is due to
Mixing due to turbulence
Gravitation of earth
Pressure
18. Higher the surface temperature_______ would be the tropopause
Lower
Higher
Same
19. By weight, approximate ratio of O² and N² in the atmosphere is
1:5
1:4
1:3
20. Maximum concentration of ozone is at a height of
30-35 km
20-25 km
10-15 km
21. Stratosphere is ______
Neutral
Stable
Unstable
22. Pressure at MSL is 1002.25 hPa. Find the ISA deviation Hint: (Actual-ISA)
10 hPa
12 hPa
-11 hPa
23. Tropos means ______
Under current
Convection
Turning
24. Most of atmospheric mass is contained in
Troposphere
Stratosphere
Heterosphere
25. Half of the atmospheric air mass is contained _____ below
20,000 ft
15,000 ft
10,000 ft
26. There is reversal of temperature in the atmosphere at 8 km because
Lapse rate reverses at poles and becomes negative
Lapse rate at equator is the same as at poles even above the poles
Lapse rate at equator is always higher than at poles
Lapse rate at poles is always higher than at equator
27. In actual atmosphere the lapse rate could
rise up to 50 km
fall up to 8 km.
Assume any value
28. Negative lapse rate of temperature is
temperature fall with height
temperature rise with lowering height
Isothermal rate
Temperature rise with height
29. Heat transfer in the atmosphere is maximum due to
radiation
latent heat
convection
sensible heat
30. Mother of Pearl clouds occur in
Thermosphere
Mesosphere
Stratosphere
31. In ICAO ISA the atmosphere is assumed to be isothermal
11 to 20 km
11 to 16 km
11 to 32 km
in stratopshere
32. Troposphere is generally
Unstable
Neutral
stable
33. In actual atmosphere temp. at 19 km is -60°C. Find the ISA deviation?
-4.5°C
-03.5°C
-05.5°C
34. Tropopause is discontinuous at about
40º lat
80º lat
30º lat
35. By volume, the approximate ratio of O² to N² in the atmosphere is
1:5
1:4
1:3
36. Height of tropopause
is constant
varies with altitude
varies with latitude
37. Atmosphere is heated by
Solar Radiation
Heat from earth surface
From above
38. The knowledge of the height of tropopause is important for a pilot because
stratosphere starts at this height where all solar radiation are absorbed
weather is mainly confined up to this level
clouds rarely reach up to this height due to jetstreams
39. Height of Tropopause at poles is
12-13 km
08-10 km
12-14 km
40. Additional oxygen is needed while flying above
10000 ft
7000 ft
5000 ft
41. CO₂ and H₂O ae also called
Rare Earth Gases
Green house Gases
42. The temperature of ISA at 17km is
-56.5°C
-65.5°C
-35.5°C
43. By volume, the proportion of CO² in the atmosphere is
0.3%
0.03%
3%
44. Most of the transfer of heat in the atmosphere is due to
Conduction and freezing
Convection and evaporation
Sublimation and radiation
Condensation, sublimation and freezing
45. Above 8 km the lower temperatures are over
Poles
Mid Latitudes
Equator
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