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प्रश्न
Define smog.
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उत्तर
- 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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संबंधित प्रश्न
Haemoglobin of the blood forms carboxy haemoglobin with ______.
Which sequence for green house gases is based on GWP?
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Assertion (A): If BOD level of water in a reservoir is more than 5 ppm it is highly polluted.
Reason(R): High biological oxygen demand means high activity of bacteria in water.
From where does ozone come in the photo chemical smog?
How does classical smog differ from photochemical smog?
Differentiate the following:
BOD and COD
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