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45. NCERT Exemplar: Short answer questions VI

What happens when

a. \(ZnCO_3\) is heated in the absence of oxygen?

b. a mixture of \(Cu_2O\) and \(Cu_2S\) is heated?

a. \(ZnCO_3+Heat → X\)

Where, X is

\(ZnO_2(s)+CO_2(g)\)
\(ZnO_2(s)+CO(g)\)
\(ZnO(s)+CO(g)\)
\(ZnO(s)+CO_2(g)\)

b. \(2Cu_2O(s)+Cu_2S(s)→Y\)

Where, Y is

\(6Cu(s)+SO_2(g)\)
\(3Cu(s)+SO_2(g)\)
\(6Cu(s)+SO_3(g)\)

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