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

Related Mcqs:

1. ______________ 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...

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

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

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

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

5. 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...

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

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

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

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

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

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

9. Refractory bricks having high thermal conductivity is desirable, when it is to be used in the _________________?

   A. L.D. converter B. Blast furnace C. Rotary kiln D. Recuperator...

10. At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?

    A. Independent of B. Directly proportional to C. Inversely proportional to D. Proportional to the square of...