A) ammonia
B) hydrogen
C) nitrogen
D) oxygen
Correct Answer: A
Solution :
Key Idea: Write the reaction to find product. (i)\[3Mg+{{N}_{2}}\xrightarrow{{}}\underset{magnesium\,\,nitride}{\mathop{M{{g}_{3}}{{N}_{2}}}}\,\] (ii)\[M{{g}_{3}}{{N}_{2}}+6{{H}_{2}}O\xrightarrow{{}}3Mg{{(OH)}_{2}}+2N{{H}_{3}}\] \[\therefore \]gas evolved is ammonia\[(N{{H}_{3}})\]
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