A)
(p) (g) (r) Zinc Water Carbon dioxide
B)
(p) (g) (r) Magnesium Hydrochloric acid Oxygen
C)
(p) (g) (r) Magnesium Water Carbon dioxide
D)
(p) (g) (r) Zinc Hydrochloric acid Hydrogen
Correct Answer: D
Solution :
\[\underset{Zinc}{\mathop{Zn}}\,\,\,+\,\,\underset{\begin{smallmatrix} Hydrochloric \\ acid \end{smallmatrix}}{\mathop{2HCl}}\,\to \underset{\begin{smallmatrix} Zinc \\ chloride \end{smallmatrix}}{\mathop{ZnC{{l}_{2}}}}\,\,\,+\,\,\underset{Hydrogen}{\mathop{{{H}_{2}}}}\,\] Hydrogen gas burns with a pop sound when burning splinter is brought near it.
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