1.

Which of the following statement is incorrect? (a) Cassiterite is not the ore of tin (b) Metallurgy is a process of mixing of ore (c). Concentration of chromite (FeO.Cr_2O_3) is done by magnetic separation (d) ZnS with depressant NaCN from Na_2[Zn(CN)_4].

Answer»

(a) & (B)
Only (a)
(b), C & (d)
C and (d)

ANSWER :A


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