en Polossut
for this reaction and add the state symbols of the realland
Long Answer Type Questions
33. (a) What is meant by a chemical reaction ? Explain with the help of an exam
(b) Give one example each of a chemical reaction characterised by :
(i) evolution of a gas
(ii) change in colour
(iii) formation of a precipitate
(iv) change in temperature
(v) change in state.
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