A. Sulphate
B. Carbonate
C. Hydroxide
D. Bi-carbonate
Related Mcqs:
- Black liquor is converted into white liquor by __________________________?
A. Evaporation and burning the concentrate followed by causticisation of products
B. Multi-effect evaporation only
C. Selective liquid extraction
D. Extractive distillation - In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
A. Sodium sulphide & sodium carbonate
B. Sodium sulphite & sodium carbonate
C. Sodium sulphite & sodium sulphide
D. None of these - Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?
A. SO3
B. Cl2
C. NH3
D. SO2 - ______________ paper is used in the manufacture of newsprint paper ?
A. Ground-wood
B. Board
C. Tissue
D. Wrapping - Rosin soap is added during paper manufacture to____________________?
A. Impart adhesive properties
B. Improve opacity
C. Impart resistance to penetration by liquids
D. None of these - Which of the following paper does not require a filler during manufacture ?
A. Bond paper
B. Writing paper
C. Blotting paper
D. Coloured paper - Hollander beater used during paper pulp manufacture does not facilitate the ______________ of fiber?
A. Cutting
B. Fibrillation
C. Hydration
D. Strengthening - The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?
A. Avoid mechanical weakening of fibre
B. Remove lignin by way of crystallisation
C. Increase the cellulose content
D. None of these - Tall oil obtained as a by-product from the black liquor recovery is________________?
A. A black, sticky & viscous liquid
B. Used in the manufacture of greases, emulsions & soaps
C. Composed mainly of rosin & fatty acids
D. All A , B. & C. - Which of the following is the main constituent of the mother liquor produced in salt industry ?
A. Quick lime
B. Glauber’s salt
C. Salt petre
D. Bromine
