Embibe Experts Solutions for Chapter: Hydrogen, Exercise 1: Level 1

What happens when steam is passed over red-hot carbon?

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

The volume strength of ${\mathrm{H}}_{\mathrm{2}}{\mathrm{O}}_{\mathrm{2}}=$

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

Permanent hardness of water can be removed by:

${\mathrm{KMnO}}_4$ 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:

The molecule which is NOT hydrolysed by water at $25 °\mathrm{C}$ is:

Hydrogen has three isotopes. The number of possible diatomic molecules will be_____.