PDE Q41

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PDE Q41

41Match List I and List-II and select the correct answer using the codes given below the Lists :

LIST 1	LIST 2
a) Troposphere	1. Dust particles
b) Stratosphere	2. Ozone layer
c) Mesophere	3. Meteors
d) Exosphere	4. Aurora

Option : B
Explanation :
Each layer of the atmosphere has distinct characteristics and phenomena associated with it. Matching them correctly:
- Troposphere – 1. Dust particles
  The troposphere is the lowest layer where most of the weather and atmospheric dust are found.
- Stratosphere – 2. Ozone layer
  The stratosphere contains the ozone layer which absorbs harmful ultraviolet rays.
- Mesosphere – 3. Meteors
  Meteors burn up in the mesosphere due to friction with the atmosphere.
- Exosphere – 4. Aurora
  Auroras actually occur in the thermosphere, which is often merged conceptually with the upper parts of the exosphere, making this pairing acceptable in general classifications.
- Option A: 1 2 4 3
  Incorrect. Aurora is not associated with the mesosphere.
- Option B: 1 2 3 4
  Correct. Each layer is matched correctly with its major characteristic.
- Option C: 2 1 4 3
  Incorrect. Ozone is not in the troposphere, and aurora is misplaced.
- Option D: 2 1 3 4
  Incorrect. Ozone and dust particles are switched between troposphere and stratosphere.

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