as 18(b)part.
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Explanation:
Petroleum is lighter than water . Therefore this liquid float over the water. Petrol is also insoluble in water
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Explanation:
properties of petroleum:
=petroleum is found above sea bed and its density is less than that of water that is why it is found above the water.
=the boiling point of petroleum is more than that of water and all the mainly present impurities of a crude oil that is why it is found at the top of the fractilation distillation of crude oil.
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