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NEET UG CHEMISTRY MCQ: HYDROGEN

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Hydrogen peroxide oxidises [Fe(CN)6]4−{\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{4 - }} to [Fe(CN)6]3−{\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{3 - }} in acidic medium but reduces [Fe(CN)6]3−{\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{3 - }} to [Fe(CN)6]4−{\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{4 - }} in alkaline medium. The other products formed are, respectively.
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Correct option: C
H2O   and  (H2O+O2){H_2}O\mathrm{ }\,\,\,\mathrm{and}\,\,\mathrm{ }\left( {{H_2}O + {O_2}} \right)
Option D (H2O(v){\mathrm{H}_2}\mathrm{O}\left( v \right)) is correct because washing soda (sodium carbonate decahydrate) loses water of crystallization upon heating.

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