Air, combustion, rusting and fire fighting questions | form one Chemistry

1. What is air?
2. Write down four constituents of air.

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1. Describe the concept of combustion.
2. Mention any two areas where combustion is applied.

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Choose any two(2) classes of fire, state the burning materials and the appropriate extinguisher.

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A homogenous mixture of ____ in the atmosphere is called ______.

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The highest percentage of Nitrogen in the atmosphere is __ % by volume and that of carbon dioxide  is ___ % by volume.

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UNSOLVED