Discussion
Match each pollutant in List I with its principal environmental effect in List II.
List I
A. PM2.5
B. Sulphur dioxide
C. Chlorofluorocarbons
D. Methane
List II
1. Acid deposition
2. Cardiopulmonary disease and reduced visibility
3. Climate forcing and background ozone
4. Stratospheric ozone depletion
Select the correct match.
Answer: C
Correct answer: A-2, B-1, C-4, D-3
Each pollutant is matched to its principal effect. PM2.5 (A) causes cardiopulmonary disease and reduces visibility (2); sulphur dioxide (B) drives acid deposition (1) after oxidation to sulphuric acid.
Chlorofluorocarbons (C) deplete stratospheric ozone (4), releasing chlorine when photolysed. Methane (D) is a climate forcer and, through its role in tropospheric chemistry, raises background ozone (3) - the one item on the list whose effect is global and long-term rather than regional.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development