Q10 of 65 Page 18

Which one of the following properties is not generally exhibited by ionic compounds?

In solid state, ions in ionic compounds are not free to move. Thus, such compounds do not show electrical conductivity in solid state. Whereas, in molten state, ions are free to move and hence conduct electricity.

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8

The composition of aqua-regia is

 9

Which of the following are not ionic compounds?

(i) KCl


(ii) HCl


(iii) CCl4


(iv) NaCl

 11

Which of the following metals exist in their native state in nature?

(i) Cu


(ii) Au


(iii) Zn


(iv) Ag

 12

Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

(i) Au


(ii) Cu


(iii) Na


(iv) K