Answers

2015-06-04T14:09:29+05:30
NAIL BICOME BROWNISH COLOUR DUE TO RUSTING
THE COLOUR FADE BECAUSE WITH TIME IT REACTS WITH OXYGEN N AIR
 
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2015-06-04T14:11:14+05:30
Iron nail become brownish in colour because rust is formed as it comes in contact to moisture.
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