Q12 of 36 Page 24

Choose the correct statement from the following:

When natural gas is compressed under high pressure it is called CNG which is a clean fuel used in vehicles.

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10

Which of the following is not a constituent of petroleum?

 11

Petroleum was formed from organisms:

 13

You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?

 14

What does CNG stand for and why is it considered to be a better fuel than petrol?