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Identify methods for prevention of rusting from the following. 1) By applying oils and greases on surfaces 2) By paint coating on surfaces 3) By galvanisation 4) By keeping the iron articles in air A) 1, 2 B) 1, 2, 3 C) 4 D) 2, 4 |
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Answer» Correct option is B) 1, 2, 3 |
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