A) \[\text{0}\,\text{to}\,-3\]
B) \[-3\,\text{to}\,0\]
C) \[-3\,\text{to}\,+5\]
D) \[-3\,\text{to}\,+3\]
Correct Answer: D
Solution :
\[\underset{\text{black}}{\mathop{Mn{{O}_{2}}}}\,+4HCl\xrightarrow{{}}MnC{{l}_{2}}+\underset{\text{greenish}\,\text{yellow}\,\text{gas}}{\mathop{2{{H}_{2}}O+C{{l}_{2}}}}\,\] \[\overset{-3}{\mathop{N}}\,{{H}_{3}}+3C{{l}_{2}}\xrightarrow{{}}\overset{+\,3}{\mathop{N}}\,C{{l}_{3}}+3HCl\]
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