In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?

Related Mcqs:

1. Paper pulp produced by Kraft/sulphate process is__________________ ?

   A. Bleached easily
   B. Dull white in color
   C. Strong fibrous
   D. Dark colored

2. The manufacture of Kraft pulp is done by a/an _________________ process?

   A. Alkaline
   B. Acidic
   C. Neutral
   D. None of these

3. Cooking liquor in case of sulphite process is _____________________?

   A. Sodium sulphite and sodium bisulphite
   B. Magnesium sulphite and free SO2 in acid medium
   C. Magnesium sulphate and magnesium bicarbonate
   D. None of these

4. The major constituent of black liquor generated during paper manufacture is sodium___________________?

   A. Sulphate
   B. Carbonate
   C. Hydroxide
   D. Bi-carbonate

5. 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

6. ______________ paper is used in the manufacture of newsprint paper ?

   A. Ground-wood
   B. Board
   C. Tissue
   D. Wrapping

7. Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?

   A. Require lower initial investment
   B. Require more power
   C. Produce lower concentration NaOH
   D. None of these

8. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?

   A. Diaphragm electrolytic cell process
   B. Mercury electrolytic cell process
   C. Lime-soda process
   D. None of these

9. Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?

   A. Na2CO3
   B. NaHCO3
   C. H2
   D. None of these

10. Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?

    A. SO3
    B. Cl2
    C. NH3
    D. SO2