Q1 of 34 Page 86

Give one example of each combustible and non-combustible substance.

Combustible substance – The substance that undergoes combustion is said to be combustible.


Example - Petrol


Non-combustible substance - The substance that does not undergo combustion is said to be non-combustible.


Example – Iron


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Write the products which are formed when magnesium burns with oxygen.

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If we cut off the supply of air for combustion of a substance, what will happen?

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At which temperature, a substance catches fire and starts burning?