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Which of the following is/are not caused due to Nitric oxide pollution - 1. leaf spotting in plants 2. bronchitis-related respiratory problems in human 3. production of corrosive gases through photo chemical reaction 4. silicosis in human (a) 1 and 3 (b) only 1 (c) 1, 2 and 4 (d) only 4 |
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Answer» The correct option is: (d) only 4 Explanation: Silicosis is a chronic lung disease caused by breathing in tiny bits of silica dust. |
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