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Question 5(a) Which of the following methods is not used in preventing iron from rusting?1. Applying a coating of zinc2. Applying a coating of lead3. Applying paint4. Applying grease(b) Planting more trees in and around the industrial regions ensures good quality air. True or False?

Answer»


Question 5



(a) Which of the following methods is not used in preventing iron from rusting?



1. Applying a coating of zinc



2. Applying a coating of lead



3. Applying paint



4. Applying grease



(b) Planting more trees in and around the industrial regions ensures good quality air. True or False?





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