Question: The correct statement is :
aniline is a froth stabilizer.
zincite is a carbonate ore.
sodium cyanide cannot be used in the metallurgy of silver.
zone refining process is used for the refining of titanium.
Correct Option: 1
Solution:
Ti is refined by van Arkel method. Silver is leached by dilute solution of $\mathrm{NaCN}$. Zincite is oxide ore of zinc i.e. ZnO. Aniline is a froth stabilizer.
