Discussion
Which of the following is a major pollutant found in contaminated soil ?
Answer: C
The key's answer is heavy metals.
Heavy metals such as lead, cadmium, chromium, arsenic and mercury are the most widespread and persistent soil contaminants. They come from mining, smelting, industrial effluents, sewage sludge and some fertilisers and pesticides. Unlike organic pollutants they are not broken down, so they accumulate and enter food crops.
Nitrogen oxides are air pollutants, not soil contaminants. Hydrocarbons and mineral oil do contaminate soil at specific sites, such as oil spills and fuel stations, but they are biodegradable over time and more localised, so the standard answer is heavy metals.
No comment is present. Be the first to comment.
Loading…
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