Which of the following gases in troposphere do not absorb outgoing IR radiations from the earth surface?
A. Carbon dioxide
B. Nitrogen dioxide
C. Sulphur dioxide
D. Nitrous oxide
E. Ozone
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → B and C Only
Nitrogen dioxide and sulphur dioxide are air pollutants that absorb chiefly in the ultraviolet and visible range; they are not counted among the greenhouse gases that trap the earth’s outgoing infrared radiation.
Carbon dioxide, nitrous oxide and tropospheric ozone all have vibrational modes in the infrared window and are standard greenhouse gases, so they do absorb the outgoing IR.