The pair that does NOT require...|Metallurgy|JEEMAIN 2019

JEE MAIN 2019

12-01-2019 S2

Question

The pair that does NOT require calcination is

Select the correct option:

$\mathrm{Fe}_2 \mathrm{O}_3$ and $\mathrm{CaCO}_3 \cdot \mathrm{MgCO}_3$

$\mathrm{ZnCO}_3$ and CaO

ZnO and MgO

ZnO and $\mathrm{Fe}_2 \mathrm{O}_3 \cdot x \mathrm{H}_2 \mathrm{O}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

ZnO and MgO They are oxides while other are carbonates or hydrated oxides which require calcination.

Question Tags

JEE Main

Chemistry

Easy

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