Pieces of iron taken in a spatula is burnt, but it fails to burn. Hence it can be concluded that iron is a/an:

combustible substance

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non-combustible substance

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explosive

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hydrocarbon

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Solution

The correct option is B non-combustible substance
Substances that do not burn in air/oxygen in the presence of a flame are called non-combustible substances. Iron is a non- combustible substance. Hence it fails to burn, and so it doesn't create any flame.

Combustibility of a material depends upon its ease of reaction with air/oxygen, the ignition temperature and the release of flammable vapours.

Substances like petrol, kerosene and diesel are highly combustible. Stones, glass, and cement are examples of non-combustible substances.

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