The reaction that does NOT define calcination is :

Options

A. `CaCo_(3) . Mg CO _(3) overset(Delta) to CaO + MgO + 2CO_(2)`
B. `2 Cu S + 3O_(2) overset(Delta) to 2Cu _(2)O+ 2SO_(2)`
C. `Zn CO_(3) overset(Delta) to Zn O + CO_(2)`
D. `Fe _(2) O _(3). XH_(2) O overset(Delta) to Fe _(2) O _(3) + XH_(2) O `

Answer

B

Explanation

`2Cu _(2)S + 3O _(2) overset(Delta ) to 2Cu _(2) O + 2OS _(2)`
This reaction is roasting of `Cu _(2) S.`