A. 1
B. 2.5
C. 5
D. 10
Related Mcqs:
- Production of one ton of cement requires about _______________ tons of limestone ?
A. 0.6
B. 1.2
C. 2.2
D. 3.8 - 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 - The most economical pulp for the production of newsprint would be the _____________________ pulp?
A. Ground-wood
B. Sulphate
C. Sulphite
D. Semi-chemical - Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is ______________ percent?
A. 10
B. 50
C. 80
D. 95 - Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
A. Depithing
B. Digestion
C. Bleaching
D. None of these - Paper grade bamboo contains about _______________ percent cellulose ?
A. 5
B. 20
C. 40
D. 60 - Digestion of wood-base materials (for manufacture of pulp) is done to __________________?
A. Remove lignin
B. Produce long fibres
C. Prevent deterioration on storage
D. None of these - Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
A. Coke and sand
B. Brine and coal
C. Coke and caustic soda
D. None of these - Bleaching of paper pulp is done with__________________?
A. Activated clay
B. Bromine
C. Chlorine or chlorine dioxide
D. Magnesium sulphite - 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
