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Which of the following take place during...

Which of the following take place during calcination -

A

`CaCO_(3)rarr CaO+CO_(2)`

B

`2FeS_(2)+(11)/(2)O_(2)+Fe_(2)O_(3)+4SO_(2)`

C

`Al_(2)O_(3).xH_(2)OrarrAl_(2)O_(3)+xH_(2)O`

D

`ZnS+(3)/(2)O_(2)rarr ZnO+SO_(2)`

Text Solution

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The correct Answer is:
A, C, D
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