Which one of the following reaction is an example of calcination process?

2 A g + 2 H C l + [0] \to 2 A g C l + H_{2} O

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2 Z n + O_{2} \to 2 Z n O

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2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}

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2 P b C O_{3} . P b (O H)_{2} Δ - \to 3 P b O + 2 C O_{2} ↑ + H_{2} O

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Solution

The correct option is D $2 P b C O_{3} . P b (O H)_{2} Δ - \to 3 P b O + 2 C O_{2} ↑ + H_{2} O$
Calcination: In calcination, carbonates hydroxides, hydratedoxides etc are heated in absence of air at high temperature (below m.p.).
$2 P b C O_{3} . P b (O H)_{2} Δ - \to 3 P b O + 2 C O_{2} ↑ + H_{2} O$

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Which one of the following reactions is an example of decomposition reaction?

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