Question

The correct statement regarding the given Ellingham diagram is:

• A. At $800\, ^{\circ}C$, $Cu$ can be used for the extraction of $Zn$ from $ZnO$
• B. At $500\, ^{\circ}C$ coke can be used for the extraction of $Zn$ from $ZnO$
• C. Coke cannot be used for the extraction of $Cu$ from ${Ca_2O}$.
• D. At $1400\, ^{\circ}C$ $Al$ can be used for the extraction of $Zn$ from $ZnO$

Answer 1

Answer: (D)

At $1400\, ^{\circ}C$ $Al$ can be used for the extraction of $Zn$ from $ZnO$

Answer 2

According to the given diagram Al can reduce ZnO.
${3ZnO + 2Al -> 3Zn + Al2O3 }$