Which of the following processes is absent in glass manufacturing process ?

Related Mcqs:

1. Basic oxide is absent in ___________________ glass?

   A. Flint
   B. Pyrex
   C. Quartz
   D. All A, B. & C

2. Coloured glass is obtained by mixing of colored salts. Addition of ___________________ oxide is done to impart greenish blue color to the glass?

   A. Chromium
   B. Arsenic
   C. Copper
   D. Manganese

3. Laboratory glass wares which reacts with hydrofluoric acid, are made of the ______________ glass?

   A. Lead
   B. Borosilicate
   C. Soda lime
   D. Alkali silicate

4. ___________________ glass is used for the manufacture of optical glass ?

   A. Pyrex
   B. Soda
   C. Flint
   D. Crooke’s

5. Type of glass used in optical work is the ___________________ glass?

   A. Soda-lime
   B. Fibre
   C. Lead
   D. Borosilicate

6. Commonly used glass is known as the _______________ glass?

   A. Flint
   B. Hard
   C. Pyrex
   D. Soda

7. The type of high refractive index glass used in optical instruments is _____________ glass?

   A. Pyrex
   B. Flint
   C. Crookes
   D. None of these

8. 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

9. Which of the following is not a raw material used for the manufacture of ordinary glass ?

   A. Iron oxide
   B. Soda ash
   C. Limestone
   D. Silica

10. Solvay process as compared to dual process (i.e. modified Solvay process) ?

    A. Can use low grade brine
    B. Has less corrosion problems
    C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
    D. Both B. and C.