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

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution, the ratio of volumes of hydrogen evolved is______.

Temporary hardness may be removed from water by adding:

On an industrial scale, ${\mathrm{H}}_2{\mathrm{O}}_2$ is prepared by the auto-oxidation of:

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

In which of the following equations does ${\mathrm{H}}_2{\mathrm{O}}_2$ act as a reducing agent in the acidic medium?

When hydrogen peroxide is treated with a cold acidified ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ solution containing ether, a blue colour is obtained. This is due to:

${\mathrm{H}}_2{\mathrm{O}}_2$ is used as:

Which of the following gives ${\mathrm{H}}_2{\mathrm{O}}_2$ on hydrolysis?