Answers

2014-10-30T05:00:38+05:30
Oil and water dont mix even when they are poured into one container .........
oil is a viscous liquid which doesnot mix with any liquid except petrol...........
hence when alcohol and water are mixed we obtain a solution but not when oil and  water are mixed
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2014-10-30T05:30:28+05:30
The three substances have different densities.When mixed they form different layers. since the composition will not be uniform, it is heterogeneous 
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