Pollutants and Their Classification
Trending Questions
Q. Tetrachloroethane which was earlier used as solvent for dry cleaning, has been replaced by
- Alum
- Chlorine gas
- Ethanal
- Liquid CO2
Q. Which of the following is a secondary pollutant?
- CO2
- N2O
- SO2
- PAN
Q. Which of the following is a sink for CO?
- Oceans
- Plants
- Haemoglobin
- Micro-organisms present in the soil
Q. The non-viable particulate among the following is:
- dust
- bacteria
- moulds
- fungi
Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.
Reason
High biological oxygen demand means low activity of bacteria in water.
If BOD level of water in reservoir is less than 5 ppm it is not polluted.
Reason
High biological oxygen demand means low activity of bacteria in water.
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Q. Which of the following is not the example of non-degradable pollutants?
- Waste Organic Matter
- DDT
- Plastics
- Heavy metals
Q. Which of the following is an example of particulate pollutants?
- Oxides of sulphur
- Oxides of carbon
- Oxides of nitrogen
- None of the above
Q. The viable particulate among the following is:
- fumes
- algae
- smoke
- mist
Q. When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical.these pollutants are called ______.
- primary air pollutant
- secondary air pollutant
- tertiary air pollutant
- none of above
Q. Pollution is:
- removal of top soil
- conservation of energy
- release of toxic/undesirable materials in environment
- all of the above