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(a) What happens chemically when quick lime is added to water ? (b) Balance the following chemical equation Mn02 + HC1 —> MnC12+ C12 + Hp (c) What is decomposition reaction ? Explain it with suitable example. CBSE Class X Science LA (5 Marks)

Answer»

a vigorous reaction TAKES PLACE when QUICKLIME is added to water the temperature of beaker INCREASES CaO+H2O=Ca(OH)2b)MnO2+4HCl=MnCl2+2H2O +Cl2c)reaction in which one COMPONENT is break down into two or more.ex:- 2H2O=2H2+O22FeSO4:-Fe2O3+SO2+SO3



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