Embibe Experts Solutions for Chapter: Hydrogen, Exercise 3: Level 3

Moist hydrogen cannot be dried over concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ because:

_________is used as an oxidising agent to bleach dark hair by a redox reaction.

The volume of oxygen liberated from $0.68 \mathrm{g}$ of ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$ is_____        

[MH CET 2014]

$10 \mathrm{volume}$ ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$ is about_______.

In alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces a compound in which the oxidation state of $\mathrm{Mn}$ is

${\mathrm{KMnO}}_4$ reacts with ${\mathrm{H}}_2{\mathrm{O}}_2$ in an acidic medium. The number of moles of oxygen produced per mole of ${\mathrm{KMnO}}_4$ is:

Consider the following statements about the ortho or para forms of hydrogen.
$I.$ Ortho or para hydrogens are isotopes of hydrogen.
$II.$ Specific heats of the two forms are same.
$III.$ Chemical properties of the two forms are same.
$IV.$ Boiling points of the two forms are same.

Which of these is/are correct statements?

Commercially, hydrogen peroxide is marketed as $100 \mathrm{V}$, which means it contains______ ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$. (Atomic masses: H-1, O-16)