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Question
What is known as smog? What harm is done by smog especially in winter?
Solution
Smog means smoke + fog. In winter season smog is responsible for many accidents due to the obstacle in visibility.
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RELATED QUESTIONS
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| Column 'A' | Column 'B' |
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| 4. Sulphur dioxide | d. Skin cancer |
| 5. Nitrogen dixoide | e. Irritation of eyes |
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