Q50 of 65 Page 89

Which of the following is being used as a source of hydrogen gas needed to manufacture fertilizers?

The full form of CNG is compressed natural gas. Natural gas is a very important fossil fuel because it is easy to transport through pipes. It can be used as a fuel in homes and factories. It is also used as a starting material for the manufacture of a number of chemicals and fertilizers.

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48

Which is the major component of CNG?

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The gas which occurs above the petroleum oil trapped under the rocks is called:

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One of the following is not an exhaustible source of energy. This one is:

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The slow process by which the large land plants and trees buried deep under the earth have become coal is called: