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 chloride solution will form …………………. at the cathode. (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 …………………. .(calomine / haematite)(v) The salt prepared by the method of direct combination is ………………….. (iron (II) chloride / iron (III) chloride)

Answer»

(i) fused 

(ii) hydrogen gas 

(iii) upward 

(iv) haematite 

(v) Iron (III) chloride



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