JEE Main 12 Jan 2019 Evening Question 1
Question: The pair that does not require calcination is
[JEE Main Online Paper Held On 12-Jan-2019 Evening]
Options:
A) $ ZnO $ and $ Fe _2O _3.xH _2O $
B) $ ZnCO _3 $ and $ CaO $
C) $ ZnO $ and $ MgO $
D) $ Fe _2O _3 $ and $ CaCO _3.MgCO _3 $
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Answer:
Correct Answer: C
Solution:
- The correct option is C:- $ ZnO $ and $ MgO $
$ ZnO $ and $ MgO $ both are in oxide form therefore no change on calcination.
