The end bleaching agent used to move last traces of colour bodies from the pulp is ____________________?

Related Mcqs:

1. Bleaching action of bleaching powder is due to its _____________ properties ?

   A. Reducing B. Oxidising C. Disinfecting D. None of these...

2. Bleaching of paper pulp is done with__________________?

   A. Activated clay B. Bromine C. Chlorine or chlorine dioxide D. Magnesium sulphite...

3. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?

   A. Sodium silicate B. Sodium borate C. Sodium tripolyphosphate (STPP) D. Caustic soda...

4. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?

   A. Slaked lime B. Soda lime C. Calcium perchlorate D. None of these...

5. The most economical pulp for the production of newsprint would be the _____________________ pulp?

   A. Ground-wood B. Sulphate C. Sulphite D. Semi-chemical...

6. The ideal pulp for the manufacture of paper should have high ____________________ content?

   A. Cellulose B. Lignin C. Both A. & B. D. None of these...

7. In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?

   A. 10 atm., 800 °C B. 10 atm., 170-180°C C. 1 atm., 170 – 180°C D. 1 atm., 800°C...

8. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?

   A. 75 B. < 10 C. > 30 D. 50...

9. Production of one ton of dry paper pulp requires about ___________________ tons of bamboo or wood?

   A. 1 B. 2.5 C. 5 D. 10...

10. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the _____________ process?

    A. Mechanical B. Sulphate/Kraft C. Sulphite D. Neutral sulphite semi-chemical...