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Question 23Find out the wrong statements and write them in their correct form.(i) We can survive for some time without air but we cannot survive even for a few minutes without food.(ii) A brick kiln emits a lot of smoke and other harmful gases causing air pollution.(iii) Carbon monoxide is produced by the complete burning of fuels such as coal, petrol, diesel.(iv) Chlorination is a commonly used chemical method for killing germs in water.(v) Water which is suitable for drinking is called soft water. |
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Answer» Question 23 |
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