Question

Burnt grains and wood are preserved in the....... form

Answer 1

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After burning the grains and wood, they can be preserved in form of ash or charcoal.

There are fibres in form of cellulose and minerals present in grains and woods. When the grain and wood are burnt, they react with elements of air like oxygen, carbon, hydrogen and forms carbon dioxide and ashes.

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Answer 2

They turn into ash.

Burnt grains and wood are preserved in the ash form