Dr. S.N. DHAWAN, Dr. S.C.KHETERPAL and, P.N.KAPIL Solutions for Chapter: Hydrogen, Exercise 4: Competition Focus

The volume of 10 volume ${\mathrm{H}}_2{\mathrm{O}}_2$ solution that decolourises $200 \mathrm{mL} \mathrm{of} 2\mathrm{N}$ ${\mathrm{KMnO}}_4$ solution in acidic medium is.
 

Hydrolysis of one mole of peroxodisulphuric acid produces.
 

100 volume hydrogen peroxide solution means.
 

Which of the following substances on treatment with ${\mathrm{H}}_2{\mathrm{O}}_2$ gives ${\mathrm{MnO}}_2$:

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A 5.0 ${\mathrm{cm}}^3$solution of ${\mathrm{H}}_2{\mathrm{O}}_2$ liberates $0.508 \mathrm{g}$of iodine from an acidified $\mathrm{KI}$ solution. Calculate the strength
of ${\mathrm{H}}_2{\mathrm{O}}_2$ solution in terms of volume strength at $\mathrm{STP}$.