Answers

2014-10-12T19:33:17+05:30
Petrol evaporates faster than the water in other bowl,,

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2014-10-12T19:53:04+05:30
 the petrol is used in bikes and cars. by keeping  the petrol in bowl with out a lid it will evaporates easily and the water get spoiled but not yet evaporates easily

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as petrol is having low boiling point it evaporates quickly when compared to water