On shaking $H_2O_2$ with acidified potassium dichromate and ether,the ethereal layer becomes:

Which of the following yields $H_2O_2$ upon hydrolysis?

The $pH$ of a solution of $H_2O_2$ is $6.0$. Some chlorine gas is bubbled into this solution. Which of the following is correct?

$H_2O_2$ will oxidise:

The structure of $H_2O_2$ is

The oxide that gives $H_2O_2$ on treatment with a dilute acid is