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JEE MAIN 2021
26-02-2021 S1
Question
Select the correct option:
A
(a) → (i), (b) → (iii), (c) → (iv), (d) → (ii)
B
$(\mathrm{a}) \rightarrow(\mathrm{ii}),(\mathrm{b}) \rightarrow(\mathrm{i}),(\mathrm{c}) \rightarrow(\mathrm{iv}),(\mathrm{d}) \rightarrow($ iii $)$
C
(a) → (ii), (b) → (iv), (c) → (i), (d) → (iii)
D
(a) → (iii), (b) → (i), (c) → (ii), (d) → (iv)
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\begin{aligned} & \text { Kernite }=\mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_7 \cdot 4 \mathrm{H}_2 \mathrm{O} \\ & \text { Cassiterite }=\mathrm{SnO}_2 \\ & \text { Calamine }=\mathrm{ZnCO}_3 \\ & \text { Cryolite }=\mathrm{Na}_3 \mathrm{~A} \ell \mathrm{~F}_6\end{aligned}$
Question Tags
JEE Main
Chemistry
Easy
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