Not produce dihydrogen

Dear student,

The reactions are as follows-

$Z n + N a O H \to N a_{2} Z n O_{2} + H_{2} Z n + H_{2} S O_{4 (d i l)} \to Z n S O_{4} + H_{2} Z n + H_{2} S O_{4 (c o n c)} \to Z n S O_{4} + S O_{2} + 2 H_{2} O C + H_{2} O \overset{1000^{0} C}{\to} C O + H_{2} H e n c e, t h e c o r r e c t o p t i o n i s (c) .$
Regards

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