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(a) What is meant by a chemical reaction...

(a) What is meant by a chemical reaction ? Explain with the help of an example
(b) Given one example each of a chemical reaction characterised by:
(i) evolution of a gas
(ii) change in colour
(iii) formation of a preopitate
(iv) change in temperature
(v) change in state.

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DINESH PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS -Short Answer Questions
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