AIIMS 201926 May
- Exam
- AIIMS
- Year
- 2019
- Date
- 26 May
- Subject
- Botany
- Chapter
- Environmental Issues
AIIMS 2019 · 26 May · Botany · Environmental Issues
Which gases are responsible for increasing the temperature of...
Which gases are responsible for increasing the temperature of atmosphere?
Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
The gases which are transparent to solar radiation but retain and partially reflect back long wave heat radiations are called greenhouse gases (GHGs). The phenomenon is called greenhouse flux. Because of greenhouse flux, the mean annual temperature of earth is . In its absence it will fall to . Hence, greenhouse gases keep the earth warm and hospitable. The various greenhouse gases are (warming effect ), (effect ), chlorofluorocarbons or CFCs (14\%) and nitrous oxide \left(\mathrm{N}_2 \mathrm{O}, 6 \%\right)$. Others of minor significance are water vapours and ozone.