In the reaction between ozone and hydrogen peroxide,$H_2O_2$ acts as

In which of the following reactions does $H_2O_2$ act as a reductant?

$10 \, mL$ of $H_2O_2$ solution $(d = 1 \, g/mL)$ when reacted with $KI$ solution produced $0.5 \, g$ of iodine. Calculate the percentage purity of $H_2O_2$ .............. $\%$

Which of the following is used in the preparation of hydrogen peroxide by the Merck process?

$A$ commercial sample of $H_2O_2$ marked as $100$ volume hydrogen peroxide means:

$H_2O_2$ is always stored in wax-lined black bottles because: