CBSE Class 7 Answered
When coal burns it possess a change.
a) Which type of change is it? Give reasons in support
of your answer.
b) What is the reactant here?
c) Name the products
Asked by ayankumarbehera99 | 24 Jul, 2020, 15:27: PM
Expert Answer
Burning of Coal is a chemical change.
Coal on burning in air evolves carbon dioxide, and the residue which remains is ash.
-Permanent change.
-Reactants are carbon and oxygen.
-New products formed are carbon dioxide and ash.
-Irreversible change as coal cannot be obtained back by cooling the products.
Answered by Ramandeep | 24 Jul, 2020, 18:44: PM
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