(a) What is meant by a chemical reaction ? Explain with the help of an example.
(b) Give one example each of a chemical reaction characterised by :
Lakhmir Singh Chemistry Class 10
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a)when two or more substance react to form new substance with a chemical change then then a chemical reaction take place.
e.g. 2h2+O2 =2h2O
e.g. 2h2+O2 =2h2O
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A chemical reaction takes place when 2 or more substance react to form new substance with a chemical change
eg.2h2+o2=2h2o
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