Hydrocarbons are a class of organic compounds consisting entirely of hydrogen and carbon. Hydrocarbons are generally colourless and hydrophobic with only weak odours. Hydrocarbons are the principal constituents of petroleum and natural gas. They are used as fuels and lubricants as well as raw materials for the production of plastics, fibres, rubbers, solvents, explosives and industrial chemicals. Methane, ethane, propane, butane, etc., are examples of some common hydrocarbons.

Sciwise - A coursebook of Science>Chapter 7 - Combustion and Flame>PRACTICE TIME>Q 6

EASY

8th CBSE

IMPORTANT

Earn 100

combustion takes place when a mixture of combustible material and air burn completely in a very short period of time.

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Important Questions on Combustion and Flame

MEDIUM

8th CBSE

IMPORTANT

Sciwise - A coursebook of Science>Chapter 7 - Combustion and Flame>Think and Discuss

Name the type of fire extinguisher that is used to combating fire caused by solid materials only. It cannot be used to douse fire caused by petrol or any other liquid. Why?