___________________ glass is used for the manufacture of optical glass ?

Related Mcqs:

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

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

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

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

3. 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...

4. Which glass is usually used in optical work ?

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

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. 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...

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

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

9. Dense soda ash used in the manufacture of glass, is chemically represented by__________________?

   A. Na2CO3 B. Na2CO3.10H2O C. Na2CO3.H2O D. Na2HCO3...

10. Basic oxide is absent in ___________________ glass?

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