Match List – I with List – II.
| LIST I | LIST II |
| A. The thickness of ozone layer is measured in | I. CFCs |
| B. The degradation of ozone layer | II. dB |
| C. The region where good ozone is found | III. ppm |
| D. The unit to measure the intensity of sound | IV. Dobson units |
| V. Stratosphere |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-IV, B-I, C-V, D-II
A. The thickness of ozone layer is measured in — this matches IV. Dobson units.
B. The degradation of ozone layer — this matches I. CFCs. Chlorine from CFCs breaks down ozone.
C. The region where good ozone is found — this matches V. Stratosphere.
D. The unit to measure the intensity of sound — this matches II. dB. Decibels.
(III) ppm matches none.