Petroleum is refined by :

(a) Simple distillation
(b) Fractional distillation
(c) Steam distillation
(d) Vaccum distillation

Anurag Mishra Professor Asked on 18th January 2016 in Chemistry.
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    Answer: (a) Simple distillation 

    Anurag Mishra Professor Answered on 20th January 2016.
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