Which of the following is not correct ? 
 

Temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium in it

Permutit is an artificial zeolite 
 

${\mathrm{H}}_2{\mathrm{O}}_2$ acts as an oxidizing agent in the
following reaction: ${\mathrm{Cl}}_2 + {\mathrm{H}}_2{\mathrm{O}}_2 \to {\mathrm{O}}_2 + 2\mathrm{HCl}$ 
 

${\mathrm{H}}_2{\mathrm{O}}_2$ is used as bleaching agent for delicate textiles