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

Related Mcqs:

Reaction of calcium carbide with water produces a gas, which is used_________________?

A. As an illuminant B. For metal cutting/welding C. Both A. & B. D. Neither A. nor B....

The manufacture of Kraft pulp is done by a/an _________________ process?

A. Alkaline B. Acidic C. Neutral D. None of these...

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?

A. Avoid mechanical weakening of fibre B. Remove lignin by way of crystallisation C. Increase the cellulose content D. None of these...

Which of the following coals has the highest calorific value ?

A. Lignite B. Sub-bituminous C. Anthracite D. Peat...

Solvay process is used for the manufacture of____________________?

A. Caustic soda B. Soda ash C. Caustic potash D. Soda lime...