Question

fill in the blanks

a. the process by which petroleum is refined is called_______.

b. anthracite is a type of_______.

c. ________ is an important liquid fuel used at home.

d. the petroleum gas liquefied by applying pressure on its is called _______.

e. natural gas contains ______.

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Answer 1

Answer:

1).Distillation

2).Coal

3).Liquified petroleum gas(LPG)

4).Liquified petroleum gas(LPG)

5).Methane