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NEET UG CHEMISTRY MCQ: HYDROGEN

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Analyzing +4 | -1
In which of the following reactions, H2O2\mathrm{H}_2 \mathrm{O}_2 does not act as reductant?
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Correct option: A
2KBr+H2O2⟶Br2+2KOH2 \mathrm{KBr}+\mathrm{H}_2 \mathrm{O}_2 \longrightarrow \mathrm{Br}_2+2 \mathrm{KOH}
Option A (C\mathrm{C}) is correct because carbon is generally unreactive with NaOH under normal conditions.

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Hydrogen accepts an electron to form inert gas configuration. In this it resembles CaC2+H2O⟶Ca(OH)2+′X ′\mathrm{CaC}_2+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{Ca}(\mathrm{OH})_2+' \mathrm{X}\,'

Mg2C3+H2O⟶Mg(OH)2+′Y ′\mathrm{Mg}_2 \mathrm{C}_3+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{Mg}(\mathrm{OH})_2+'\mathrm{Y}\,'

The products ' X\mathrm{X} ' and ' Y\mathrm{Y} ' respectively are H2O2→2H++O2+2e−;E0=−0.68V{H_2}{O_2} \to 2{H^ + } + {O_2} + 2{e^ - };{E^0} = - 0.68V
This equation represents which of the following behaviour of H2O2{\mathrm{H}_\mathrm{2}}{\mathrm{O}_\mathrm{2}} Which reaction shows oxidizing nature of H2O2{\mathrm{H}_2}{\mathrm{O}_2}? Which of the following could act as propellent for rockets. (A): SiH4{SiH}_4, AlH3AlH_3 and NH3{NH}_3 are ionic hydrides

(R):Ionic hydrides do not react with water
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