Question

Coal burns in air to produce carbondioxide",is an example of 

a.physical change

b.chemical change

c.physical property

d.none of these

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Answer 1

Answer:

Coal burns in air to produce carbondioxide",is an example of b.chemical change.

Answer 2

Answer:

The charcoal and coal bums in air producing carbon dioxide, heat and light. Air or oxygen which helps in burning is called supporter of combustion and the chemical reaction which takes place with the release of heat and light energy is called combustion.