JEE Advanced 2007Paper 1
- Exam
- JEE Advanced
- Year
- 2007
- Paper
- Paper 1
- Subject
- Chemistry
- Chapter
- General Principles and Processes of Isolation of Metals
JEE Advanced 2007 · Paper 1 · Chemistry · General Principles and Processes of Isolation of Metals
Extraction for zinc from zinc blende is achieved by
Extraction for zinc from zinc blende is achieved by
Options
- Aelectrolytic reduction
- Broasting followed by reduction with carbon
- Croasting followed by reduction with another metal
- Droasting followed by self-reduction
Correct answer
B. roasting followed by reduction with carbon
Step-by-step 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}