Q26. Temperature in the troposphere or atmosphere
- Adecreases with height
- Bincreases with altitude
- Cremains unchanged
- Dfirst decreases then increases
Show answer & explanation
Answer: A) decreases with height
Structure of the Atmosphere
66 MCQ questions with answers and explanations · page 2 of 3
Q27. Stratosphere is -
- Amiddle region of the atmosphere
- Bupper atmosphere
- Clower region of the atmosphere
- Dregion above the tropopause
Show answer & explanation
Answer: D) region above the tropopause
Q28. In which layer of the atmosphere does the temperature not fluctuate much?
- AStratosphere
- BTroposphere
- Cexosphere
- Dthermosystem
Show answer & explanation
Answer: A) Stratosphere
Q29. In which layer of the atmosphere is most of the atmospheric ozone found?
- AThermosphere
- BTroposphere
- Cstratosphere
- Dmesosphere
Show answer & explanation
Answer: C) stratosphere
Q30. Which of the following atmospheric layers absorbs the ultraviolet rays of the Sun?
- ATroposphere
- Bstratosphere
- CIonosphere
- Dozone layer
Show answer & explanation
Answer: D) ozone layer
Q31. The stratosphere is considered ideal for the flight of jet planes because -
- AOzone present in this layer reduces fuel consumption.
- BThe temperature in this layer remains even, which is a favorable condition for fuel efficiency.
- CThis layer is beyond the range of anti-aircraft weapons.
- DThere are no clouds or other weather phenomena in this layer.
Show answer & explanation
Answer: D) There are no clouds or other weather phenomena in this layer.
Q32. Which of the following statements regarding the stratosphere is false?
- AThe stratosphere extends up to a height of 50 km.
- BThe stratosphere borders the ionosphere
- CThere is a lack of clouds in this zone.
- DThe amount of dust particles and water vapor is very less in this zone.
Show answer & explanation
Answer: B) The stratosphere borders the ionosphere
Q33. Due to the depletion of the ozone layer at a rate of 7 percent per year, a large hole of 10 million square kilometers has formed in it. This hole is located in-
- AOver the Arctic
- BOver Antarctica
- Cover the poles
- Dover America and Europe
Show answer & explanation
Answer: B) Over Antarctica
Q34. Which is the layer of the atmosphere that reflects radio waves?
- AIonosphere
- BTroposphere
- Cstratosphere
- Dexosphere
Show answer & explanation
Answer: A) Ionosphere
Q35. In which atmospheric layer are communication satellites located?
- Astratosphere
- BIonosphere
- CTroposphere
- DExosphere
Show answer & explanation
Answer: B) Ionosphere
Q36. Which of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?
- Asulfur dioxide
- Bnitrous oxide
- Ccarbon dioxide,
- Dchlorofluorocarbon
Show answer & explanation
Answer: D) chlorofluorocarbon
Q37. In which layer of the ionosphere do short radio waves get reflected and reach the surface?
- AD layer
- BE layer
- CF layer
- DS layer
Show answer & explanation
Answer: C) F layer
Q38. Which is the correct order of boundaries of different layers of the atmosphere from top to bottom?
- AMagnetopause, Mesopause, Stratopause, Tropopause
- BMesopause, Stratopause, Tropopause, Magnetopause
- CTropopause, Stratopause, Mesopause, Magnetopause,
- DStratopause, Tropopause, Magnetopause, Mesopause,
Show answer & explanation
Answer: A) Magnetopause, Mesopause, Stratopause, Tropopause
Q39. In which part of the atmosphere does 90 percent of the total amount of water vapor exist?
- AIonosphere
- Bozone layer
- CTroposphere
- Dstratosphere
Show answer & explanation
Answer: C) Troposphere
Q40. Which part of the atmosphere is a part of the chemical sphere?
- AThermosphere
- BIonosphere
- CTroposphere
- Dozone layer
Show answer & explanation
Answer: D) ozone layer
Q41. Which atmospheric layer is known as the "ceiling of seasonal change"?
- Astratosphere
- BTroposphere
- CIonosphere
- Dmesosphere
Show answer & explanation
Answer: B) Troposphere
Q42. Aeroplanes usually fly in ………….
- ATroposphere
- Bstratosphere
- Cmesosphere
- Dexosphere
Show answer & explanation
Answer: B) stratosphere
Q43. What is the atmospheric layer farthest from the Earth's surface called?
- Amesosphere
- Bstratosphere
- Cexosphere
- DIonosphere
Show answer & explanation
Answer: C) exosphere
Q44. What is the atmospheric layer found near the Earth called?
- Atroposphere
- Bstratosphere
- Cionosphere
- Dexosphere
Show answer & explanation
Answer: A) troposphere
Q45. Where is the highest concentration of ozone in the atmosphere?
- AIonosphere
- Bmesosphere
- Cstratosphere
- DTroposphere
Show answer & explanation
Answer: C) stratosphere
Q46. What is the average air pressure at sea level?
- A1003.25 millibars
- B1013.25 millibars
- C1023.25 millibars
- D1034.25 millibars
Show answer & explanation
Answer: B) 1013.25 millibars
Q47. Air pressure is usually highest when the air is-
- Acold and dry
- Bcold and moist
- Chot and dry
- Dwarm and moist
Show answer & explanation
Answer: A) cold and dry
Q48. A sudden drop in air pressure indicates which of the following?
- Aclear weather
- Bstormy weather
- Cextremely cold weather
- Drainy season
Show answer & explanation
Answer: B) stormy weather
Q49. Normal air pressure is found in-
- Aon the mountains
- Bin the desert
- Con the seabed
- D5 km above the surface
Show answer & explanation
Answer: C) on the seabed
Q50. Which of the following statements is true?
- AAir pressure is maximum at sea level
- BAir pressure is measured in millibars (mb)
- CAt any place, the air pressure increases twice and decreases twice.
- Dall of the above
Show answer & explanation
Answer: D) all of the above