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

Related Mcqs:

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

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

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

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

3. Which glass is usually used in optical work ?

   A. Lead glass
   B. High silica (borosilicate) glass
   C. Photo-sensitive glass
   D. Fibre glass

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

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

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

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

7. 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

8. Major component of flint glass is_____________________?

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

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

   A. Pyrex
   B. Soda lime
   C. Lead
   D. High silica

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

    A. Sintering
    B. Annealing
    C. Shaping or forming
    D. Melting