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General Principles and processes of Isolation of Elements
medium
કઈ જોડનુ કેલ્સીનેશન જરૂરી નથી ?
A
$ZnO$ અને $MgO$
B
$ZnO$ અને $Fe_2O_3.xH_2O$
C
$ZnCO_3$ અને $CaO$
D
$Fe_2O_3$ અને $CaCO_3.MgCO_3$
(JEE MAIN-2019)
Solution
In calcination the ore is converted to metal oxide. $ZnO$ and $MgO$ are already in oxide form.
Standard 12
Chemistry
