Environment & Ecology question from Patwari exam, 2024 by JKSSB
Which of the following are toxic air pollutants?
1. Arsenic
2. Asbestos
3. Benzene
4. Potassium Chloride
Choose the correct option:
Last updated May 15, 2026
Correct Answer:
Option C —
1, 2 and 3
• Arsenic (1): This is a heavy metal and a highly toxic air pollutant, often released into the atmosphere through smelting, coal combustion, and the use of certain pesticides. Long-term inhalation is linked to various cancers.
• Asbestos (2): Asbestos consists of microscopic mineral fibers. When these become airborne (usually during construction or demolition), they are classified as hazardous air pollutants because they can cause severe lung diseases and mesothelioma.
• Benzene (3): This is a volatile organic compound (VOC) found in gasoline fumes, tobacco smoke, and industrial emissions. It is a well-known carcinogen and is strictly monitored as a primary toxic air pollutant.
• Potassium Chloride (4): Unlike the others, this is a non-toxic salt commonly used as a fertilizer or a salt substitute. It is not considered an atmospheric toxin or a hazardous air pollutant. It is generally stable and does not pose the same inhalation risks as the first three.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
