Question

for what purpose bleaching powder used in paper mill industries

Answer 1

to remove the bacteria

Answer 2

Hey mate!!!

here is ur ans...

It is produced by reacting sodium chlorate with a reducing agent like sulfur dioxide. Chlorine dioxide is sometimes used in combination with chlorine, but it is used alone in ECF (elemental chlorine-free)bleaching sequences. It isused at moderately acidic pH (3.5 to 6).

hope it helps.