What is the correct answer?


Bleaching of paper pulp is done with

A. Activated clay

B. Bromine

C. Chlorine or chlorine dioxide

D. Magnesium sulphite

Correct Answer :

C. Chlorine or chlorine dioxide

Related Questions

Calcareous & argillaceous materials are used in the manufacture of Cation exchanger is regenerated usually with In the production of soda ash by Solvay process, the by-product is The purpose of adding Na2CO3 to water of low alkalinity is to Oxidation of ortho-xylene in presence of __________ catalyst is done to… H2S is scrubbed from refinery gases by absorption using __________ are added in lacquers to remove film brittleness and to improve… The most widely used coagulant for removing suspended impurities from… Detergent is produced by the sulphonation of dodecyl benzene, which is… High temperature carbonisation of coal produces Pick out the wrong statement. Acetone is produced by catalytic dehydrogenation of Catalytic oxidation of toluene produces Which of the following is not a raw material used for the manufacture… Commercial scale production of hydrogen from iron-steam reaction represented… Dehydrogenation of Isopropanol produces Which of the following is not produced commercially from sea water? CaSO4 . ½H2O is known as Phenol formaldehyde is produced by condensation polymerisation. It is… Pick out the wrong statement. Starting raw material for the manufacture of Maleic anhydride is Phthalic anhydride is produced by the oxidation of Bakelite is chemically known as Which form of sulphur is the most stable at room temperature? Triple superphosphate is manufactured by reacting Mercury electrolytic cells are preferred over diaphragm electrolytic cell… Chemical formula of BHC, which is an insecticide is Phosphoric acid is prepared from Calgon used in water treatment is chemically Chemical formula of 'salt cake' is