Question

B) WRITE ONE WORD FOR THE FOLLOWING
1. Anaerobic thermal degradation of wood.
2. Breaking up of coal by heating strongly in the absence of air.
3. Separation of petroleum into many useful components.
4. A gas that occurs over petroleum in reservoirs deep inside the earth.​

Answer 1

Answer:

1.Carbonisation

(Answer. anaerobic thermal degradation of wood means the slow conversion of wood into coal under the effects of high pressure, high temperature and an anaerobic bacteria. This process is also called carbonisation.)

2.Distructive distillation of coal

(The strong heating of coal in the absence of air is called destructive distillation of coal. If coal is heated in the presence of air,then coal burns to produce mainly carbon dioxide gas and no other useful products were obtained.)

3. FRACTIONAL DISTILLATION is the use of distillation to separate a liquid mixture into different parts (fractions) that differ in boiling point. The substances in crude oil have different boiling points, so they can be separated by fractional distillation.

4.The gas that occurs over petroleum in reservoirs deep inside the earth is "PROPANE". The propane is the abundant energy source found in the natural gas and is in the liquid form and the other one is butane.

Answer 2

Explanation:

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