Main constituent of limestone is____________________?

Related Mcqs:

Presence of carbonaceous matter in the sewage____________________?

A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures B. Reduces sulphate ions to sulphides causing obnoxious smell C. Increases the quantity of chlorine used for its purification D. All A, B. and C....

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as_________________?

A. (NH4)2SO4 B. NH4Cl C. (NH4)2 NO3 D. Liquid NH3...

Commercial production of Vanaspati is done by _______________ of edible vegetable oils ?

A. Hydrogenation B. Oxidation C. Hydrolysis D. Hydrocracking...

Bitterns is a/an_________________?

A. Unsaturated fat B. Starting material for the production of iodine C. By-product of chlor-alkali industry D. None of these...

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...