A) \[{{K}_{2}}O,{{H}_{2}}O\]
B) \[{{H}_{2}},{{H}_{2}}B{{O}_{3}}\]
C) \[{{H}_{2}}O,KB{{O}_{2}}\]
D) \[{{B}_{2}}{{O}_{3}},{{H}_{3}}B{{O}_{3}}\]
Correct Answer: C
Solution :
Diborane \[({{B}_{2}}{{H}_{6}})\] dissolves in strong alkali solutions giving metaborates and evolving hydrogen. \[{{B}_{2}}{{H}_{6}}+2KOH+\underset{X}{\mathop{2{{H}_{2}}O}}\,\xrightarrow{{}}\] \[\underset{\text{Pot}\text{.}\text{metaborate}\,\text{Y}}{\mathop{2KB{{O}_{2}}}}\,+6{{H}_{2}}\]
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