The yield of tar from high temperature carbonisation of dry coal is about _______________ percent?

Related Mcqs:

Blue colour is imparted to glass by the addition of__________________?

A. FeSO4 B. PbO C. CaO D. NaOH...

Catalytic oxidation of toluene produces____________________?

A. Styrene B. Phenol C. Benzene D. Tri-nitro-toluene...

Pick out the wrong statement ?

A. Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators B. Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur C. Lead azide is a popular military explosive D. TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being...

White phosphorous is stored under water, because __________________?

A. It does not react with water B. It is poisonous C. Its kindling temperature in dry air is very low D. It is unstable...

Phthalic anhydride is used____________________?

A. In making PVC B. As plasticisers C. In insecticides manufacture D. For making nylon-6...