Question

Which colourless gas evolves, when $H_{2}SO_{4}$ reacts with zinc in a dry cell battery .

• A. $H_{2}SO_{4}$
• B. $2Fe_{(s)} + O_{2(g)} + 4{H^{+}}_{(aq)} \rightarrow 2F_{(aq)}^{2 +} + 2H_{2}O_{(l)}$
• C. $\rightarrow$
• D. $\rightarrow$

Answer 1

Answer: (C)

$\rightarrow$

Answer 2

$2NH_{4}Cl + Zn \rightarrow 2NH_{3} + ZnCl_{2} + H_{2} \uparrow$.