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

Related Mcqs:

Phenolic antiseptics are added in the __________________ soap?

A. Shaving B. Medicated C. Metallic D. Transparent...

The main product of high temperature carbonisation of coal is_____________________?

A. Coke B. Ammonia C. Tar D. Phenol...

Process conditions in fermentator used for production of penicillin is____________________?

A. 25°C, 2 atm B. 50°C, l0 atm C. 30°C, 200 mm Hg (absolute) D. 90°C, 45 atm...

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?

A. Slaked lime B. Soda lime C. Calcium perchlorate D. None of these...

Pick out the false statement pertaining to water treatment ?

A. Aeration of water is effective in CO2 removal B. The zeolite water softening process reduces the hardness of water by not more than 50% C. Sodium sulphate or sodium carbonate do not cause hardness in water D. Water with pH value less than 7, is acidic...