Coloured glass is obtained by mixing of colored salts. Addition of ___________________ oxide is done to impart greenish blue color to the glass?

Related Mcqs:

Pick out the wrong statement ?

A. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively B. Protein catalysts are called enzymes C. The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes D. Total sugar content in molasses is about 10%...

Which of the following processes can remove both temporary as well as permanent hardness of water ?

A. Filtration B. Boiling C. Distillation D. None of these...

Linde process of gas liquefaction employs__________________?

A. Exchange of heat with colder stream B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion) C. Adiabatic expansion against a piston or in a turbine D. Merely compressing the gas beyond its critical pressure...

In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?

A. 10 atm., 800 °C B. 10 atm., 170-180°C C. 1 atm., 170 – 180°C D. 1 atm., 800°C...

Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?

A. Slag cement B. Glasses C. Porcelain/Potteries D. Teflon...