Extraction of Metals - Result Question 26
26. Extraction of zinc from zinc blende is achieved by
(a) electrolytic reduction
(b) roasting followed by reduction with carbon
(c) roasting followed by reduction with another metal
(d) roasting followed by self-reduction
(2007, 3M)
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Answer:
Correct Answer: 26. (b)
Solution:
- Zinc blende contain $ZnS$ which is first roasted partially and then subjected to reduction with carbon
$\begin{aligned} & ZnS+O _2 \longrightarrow ZnO+SO _2 \text { Roasting } \\ & ZnO+C \stackrel{\Delta}{\longrightarrow} Zn+CO \uparrow \text { Carbon reduction } \end{aligned}$
BETA
