1.

(a) What are the chemicals used for the preparation of chlorine in the laboratory? (b) why is chlorine passed through sulphuric acid during its preparation? (c) how will you prepare bleaching powder? 

Answer»

(a) Potassium permanganate concentrated HCl 

(b) It can absorb water vapour in the chlorine gas obtained 

(c) Bleaching powder is prepared by passing dry chlorine over dry slaked lime.



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