Chemistry
Locking of chlorine monoxide and free radicals of chlorine is called SCAVENGING. In the atmosphere, nitrogen dioxide scavenges chlorine monoxide and methane scavenges chlorine atoms, which are responsible for:
P — Acid rain
Q — Global warming
R — Ozone depletion
- Only P
- Only Q
- Only R
- Both P and Q
Answer
Only R
Reason — In the atmosphere, nitrogen dioxide scavenges chlorine monoxide and methane scavenges chlorine atoms,
ClO (g) + NO2 (g) ⟶ ClONO2 (g)
Cl (g) + CH4 (g) ⟶ CH3 (g) + HCl (g)
The process continues and these free radicals continue to break ozone molecules, causing the depletion of ozone.
Related Questions
The acid which is not responsible for acid rain is :
- Formic acid
- Carbonic acid
- Sulphuric acid
- Nitric acid
The branch of chemistry that aims to design product/process which minimize the use and/or generation of pollution is :
- Industrial chemistry
- Green chemistry
- Analytical chemistry
- Biochemistry
pH of acid rain usually ranges between:
P — 7.5 to 9.7
Q — 2 to 5
R — 3.5 to 5.6
- Only P
- Only Q
- Only R
- Both Q and R
Assertion (A): There is a gradual increase in the average temperature of the earth's surface.
Reason (R): Greenhouse effect is responsible for the increase in earth's temperature.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.