Extraction of Metals - Result Question 3
####3. The correct statement is
(2019 Main, 10 April II)
(a) zone refining process is used for the refining of titanium.
(b) zincite is a carbonate ore
(c) sodium cyanide cannot be used in the metallurgy of silver.
(d) aniline is a froth stabiliser.
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Solution:
- The explanation of given statements are as follows:
(a) Zone refining process is used for the refining of B, Ga, In,
Ti is refined by van Arkel method.
Thus, statement (a) is incorrect.
(b) Zincite
(c)
The reactions occuring during the process are as follows:
Thus, statement (c) is incorrect.
(d) Aniline and cresol help in stabilising the froth in froth floatation process.
Thus, statement (d) is correct.
