Hall-Heroult’s process .. | Metallurgy

JEE Main 2019

10-01-2019 S1

Question

Hall-Heroult’s process is given by

Select the correct option:

$\mathrm{ZnO}+\mathrm{C} \xrightarrow{\text { Coke, } 1673 \mathrm{~K}} \mathrm{Zn}+\mathrm{CO}$

$\mathrm{Cr}_2 \mathrm{O}_3+2 \mathrm{Al} \rightarrow \mathrm{Al}_2 \mathrm{O}_3+2 \mathrm{Cr}$

$2 \mathrm{Al}_2 \mathrm{O}_3+3 \mathrm{C} \rightarrow 4 \mathrm{Al}+3 \mathrm{CO}_2$

$\mathrm{Cu}^{2+}(\mathrm{aq})+\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{Cu}(\mathrm{s})+2 \mathrm{H}^{+}(\mathrm{aq})$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Chemistry

Easy

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