Question

please answer it . I is very urgently

Answer 1

9) b
10 )b
11)a
12)b
13)d
14)a
15)d
may be all are correct....
..

Answer 2

Answer:

Petroleum is mixture of various hydrocarbons having different boiling points. As the number of carbon atoms increase, the boiling point also increases. This property is used to separate the different components of petroleum and is known as fractional distillation.

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