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| Q. |
A powerful eye irritant present in smog is – |
| A. | nitric oxide |
| B. | sulphur dioxide |
| C. | peroxyacetyl nitrate |
| D. | carbon dioxide |
| Answer» C. peroxyacetyl nitrate | |
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Explanation: Peroxyacetyl nitrate is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas. It is a lachrymatory substance. |
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