Q3 / 66 · JEE Advanced 2007 (Paper 1) · Chemistry

Extraction for zinc from zinc blende is achieved by

  • A
    electrolytic reduction
  • Correct answer
    B
    roasting followed by reduction with carbon
  • C
    roasting followed by reduction with another metal
  • D
    roasting followed by self-reduction

Solution

Zinc blende is roasted and then treated with coke for the reduction. $$ \begin{gathered} 2 \mathrm{ZnS}+3 \mathrm{O}_2 \stackrel{\Delta}{\longrightarrow} 2 \mathrm{ZnO}+2 \mathrm{SO}_2 \uparrow \\ \mathrm{ZnO}+\mathrm{C} \stackrel{\Delta}{\longrightarrow} \mathrm{Zn}+\mathrm{CO} \uparrow \end{gathered} $$

Hence, the correct answer is option: 'B'.

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