Question: The correct statement is :
zincite is a carbonate ore
aniline is a froth stabilizer
zone refining process is used for the refining of titanium
sodium cyanide cannot be used in the metallurgy of silver
Correct Option: , 2
Solution:
(1) Zincite is $\mathrm{ZnO}$
(2) Aniline is the forth stablizer.
(3) Zone refining process is not used for refining of 'Ti'
(4) Sodium cyanide is used in the metallurgy of silver
