A. Remove lignin
B. Produce long fibres
C. Prevent deterioration on storage
D. None of these
Related Mcqs:
- 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 - The manufacture of Kraft pulp is done by a/an _________________ process?
A. Alkaline
B. Acidic
C. Neutral
D. None of these - The most economical pulp for the production of newsprint would be the _____________________ pulp?
A. Ground-wood
B. Sulphate
C. Sulphite
D. Semi-chemical - Production of one ton of dry paper pulp requires about ___________________ tons of bamboo or wood?
A. 1
B. 2.5
C. 5
D. 10 - Raw materials required for the manufacture of __________________ is acetylene and hydrochloric acid?
A. Phthalic anhydride
B. Vinyl chloride
C. Maleic anhydride
D. Dacron - 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 - 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 - The ideal pulp for the manufacture of paper should have high ____________________ content?
A. Cellulose
B. Lignin
C. Both A. & B.
D. None of these - Hollander beater used during paper pulp manufacture does not facilitate the ______________ of fiber?
A. Cutting
B. Fibrillation
C. Hydration
D. Strengthening - Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
A. Sulphuric acid
B. Phosphoric acid
C. Hydrochloric acid
D. Hydrofluoric acid
