Download App

Hydrogen — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen1 Mark
MCQ
Which of the following equatibns depicts the oxidizing nature of $\ce{H_2O_2}$?
  • A
    $  2 \mathrm{MnO}_4^{-}+6 \mathrm{H}^{+}+5 \mathrm{H}_2 \mathrm{O}_2 \rightarrow 2 \mathrm{Mn}^{2+}+8 \mathrm{H}_2 \mathrm{O}+5 \mathrm{O}_2 $
  • B
    $ 2 \mathrm{Fe}^{3+}+2 \mathrm{H}^{+}+\mathrm{H}_2 \mathrm{O}_2 \rightarrow 2 \mathrm{Fe}^{2+}+2 \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2 $
  • ✓
    $ 2 \mathrm{I}^{-}+2 \mathrm{H}^{+}+\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{I}_2+2 \mathrm{H}_2 \mathrm{O} $
  • D
    $ \mathrm{KIO}_4+\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{KIO}_3+\mathrm{H}_2 \mathrm{O}+\mathrm{O}_2$
✓

Answer

Correct option: C.
$ 2 \mathrm{I}^{-}+2 \mathrm{H}^{+}+\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{I}_2+2 \mathrm{H}_2 \mathrm{O} $
$2\stackrel{{-1}}{\hbox{I}^-}+2\stackrel{{+1}}{\hbox{H}^+}+\stackrel{{+1}}{\hbox{H}_2}\stackrel{{-1}}{\hbox{O}_2}\xrightarrow{ \ \ \ }\stackrel{{0}}{\hbox{I}_2}+2\stackrel{{+1}}{\hbox{H}_2}\stackrel{{-2}}{\hbox{O}}$
ions are oxidized to $I_2 ($increases in $O.N$. from $-1$ to $0)$. Hence, $\ce{H_2O_2<}$ acts as an oxidizing agent.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Hydrogen→Hydrogen — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The de-Broglie wavelength of a particle with mass $1\,gm$ and velocity $100\,m/\sec $ is
→
A mixture of camphor and benzoic acid can be separated by
→
For the alkali metals, which of the following increases with increasing atomic number?
→
Which of the following statement is correct
→
If travelling at equal speeds, the longest wavelength of the following matter waves is that for a :
→
A solution of $MgC{l_2}$ in water has $pH$
→
Which of the following molecules can central atom said to adopt $s{p^2}$ hybridization
→
When benzene diazonium chloride treated with $\beta -$ naphthol in alkaline medium a coupling reaction takes place and result into formation of azodye. In this reaction benzene diazonium chloride act as
→
The bond dissociation energies of gaseous ${H_2},\,C{l_2}$ and $HCl$ are $104, 58$  and $ 103\, kcal $ respectively. The enthalpy of formation of $HCl$ gas would be.....$kcal$
→
Bond energy of covalent $O-H$ bond in water is
→