A) \[~{{N}_{2}}\]
B) \[N{{O}_{2}}\]
C) \[{{H}_{2}}\]
D) \[{{H}_{2}}O\]
Correct Answer: C
Solution :
Magnesium and dilute HN03 reacts to produce \[{{\text{H}}_{\text{2}}}\]gas. \[Mg+\underset{\begin{smallmatrix} \text{Dilute} \\ \text{nitric}\,\text{acid} \end{smallmatrix}}{\mathop{2HN{{O}_{3}}}}\,\to Mg{{(N{{O}_{3}})}_{2}}+\underset{\text{Hydrogen}}{\mathop{{{H}_{2}}\uparrow }}\,\]
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