1.

Fill up the blanks with the correct choice given in brackets. (i) Ionic or electrovalent compounds do not conduct electricity in their __________ state.(fused / solid).(ii) Electrolysis of aqueous sodium chloridesolution will form _______________ at thecathode.  (hydrogen gas / sodium metal)(iii) Dry hydrogen chloride gas can be collected by _________________ displacement of air. (downward / upward)(iv) The most common ore of iron is _________________ . (calamine / haematite)(v) The salt prepared by the method of direct combination is ________________. (iron (II) chloride / iron (III) chloride)

Answer»

(i) Solid

(ii) H2 (hydrogen gas)

(iii) Downward

(iv) haematite

(v) Iron (III) Chloride



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