Blue colour is imparted to glass by the addition of__________________?

Related Mcqs:

1. 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

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

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

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

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

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

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

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

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

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

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

7. Co-efficient of thermal expansion of glass is decreased by the addition of _______________ during its manufacture?

   A. CaO
   B. MnO2
   C. ZnO
   D. FeS

8. The end bleaching agent used to move last traces of colour bodies from the pulp is ____________________?

   A. Chlorine dioxide (ClO2)
   B. MgO
   C. SO2 gas
   D. Mercaptans

9. Titanium dioxide is a/an ___________________ colour pigment?

   A. White
   B. Black
   C. Yellow
   D. Blue

10. Basic oxide is absent in ___________________ glass?

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