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JEE Main 202116 MarchEvening Shift

Exam: JEE Main
Year: 2021
Date: 16 March
Shift: Evening Shift
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

JEE Main 2021 · 16 March · Evening Shift · Chemistry · General Principles and Processes of Isolation of Metals

Which of the following reduction reaction CANNOT be carried out...

Which of the following reduction reaction CANNOT be carried out with coke?

Options

A ${Al}_{2}{O}_{3} \to Al$
B $ZnO \to Zn$
C ${Fe}_{2}{O}_{3} \to Fe$
D ${Cu}_{2}O \to Cu$

Correct answer

A. ${Al}_{2}{O}_{3} \to Al$

Step-by-step solution

Reduction of

{Al}_{2}{O}_{3} \to Al

is carried out by electrolytic reduction of its fused salts.

ZnO, {Fe}_{2}{O}_{3}

and

{Cu}_{2}O

can be reduced by carbon.

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