The correct statement is :

Question:

The correct statement is :

  1. aniline is a froth stabilizer.

  2.  zincite is a carbonate ore.

  3.  sodium cyanide cannot be used in the metallurgy of silver.

  4. 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.

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