______________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant ?

Related Mcqs:

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

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

2. Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?

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

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. 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

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

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

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

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

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

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

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

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

9. Major component of flint glass is_____________________?

   A. Lead oxide
   B. Silica
   C. Alumina
   D. Soda

10. Ordinary glass is not a/an_________________?

    A. Amorphous isotropic material
    B. Supercooled liquid
    C. Material with sharp definite melting point
    D. Electrical insulator