Q51 of 87 Page 106

What are non-combustible substance? Name three non-combustible substances.

Those substances which do not burn are called non-combustible substances. For Ex: Stone, cement, glass, bricks, soil, sand, water, iron nails, copper objects.


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What are combustible substances? Name three combustible substances.

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What is meant by ‘combustion’? Explain with an example.

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What are the conditions necessary for combustion to take place.