1.

What do you mean by : (a) Displacement reaction ? (b) Reduction reaction ? Combination reaction ? Write balanced chemical equations.

Answer»

Solution :(a) Displacement reaction : A reaction in which a more reactive metal displaces a LESS reactive metal from its salt solution in called displacement reaction. For example,
`Zn(s)+CuSO_(4)(aq)toZnSO_(4)(aq)+Cu(s)darr`
(B) Reduction reaction : A reaction in which hydrogen is ADDED or oxygen is removed is called reduction reaction. For example,
`ZnO+C to Zn+Co`
In this reaction reduction of ZnO to Zn has taken place.
(c) Combination reaction : A reaction in which two or more reactants combine to GIVE a single product is called combination reaction. For example,
`CaO(s)+H_(2)O(l)tounderset("(Slaked lime)")(Ca(OH)_(2)(aq))`


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