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Question
Define smog.
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Solution
- Smog is a combination of smoke and fog which form droplets that remain suspended in the air.
- Smog is a chemical mixture of gases that forms a brownish-yellow haze. It mainly consists of ground-level ozone, oxides of nitrogen, volatile organic compounds, SO2, acidic aerosols and some other gases.
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RELATED QUESTIONS
Haemoglobin of the blood forms carboxy haemoglobin with ______.
Photo chemical smog formed in congested metropolitan cities mainly consists of ______.
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Biochemical oxygen Demand value less than 5 ppm indicates a water sample to be ______.
Match the List I with List II and select the correct answer using the code given below the lists.
| List I | List II | ||
| A | Depletion of ozone layer |
1 | CO2 |
| B | Acid rain | 2 | NO |
| C | Photochemical smog | 3 | SO2 |
| D | Green house effect | 4 | CFC |
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