The last drop of water can be removed from $H_2O_2$ by

$12 \ V \ H_2O_2$ solution contains $680 \ g \ H_2O_2$. Then $\% \ W/V$ and volume of the solution is respectively ........ and ...........

The compound which does not possess a peroxide linkage is

With the help of suitable examples,explain the property of $H_{2}O_{2}$ that is responsible for its bleaching action?

What is formed by the reaction of water with sodium peroxide?

Fill in the blanks:
$(1)$ $H_2O_2$ acts as an antiseptic, then it is known as ......... in the market.
$(2)$ Cation exchange resin is a ......... group containing organic molecule.
$(3)$ The ionic radius of $H^+$ ions and that of other ions is ......... $pm$ and ......... $pm$ respectively.
$(4)$ ......... group elements give salt-like hydrides.