Which of the following is not required in the manufacture of soda ash by Solvay process? None of these Ammonia Limestone Nitric acid TRUE ANSWER : ? YOUR ANSWER : ?
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of Molasses Callagen Tannin Carbohydrate TRUE ANSWER : ? YOUR ANSWER : ?
__________ iron is the purest form of iron. Cast High silicon Wrought Pig TRUE ANSWER : ? YOUR ANSWER : ?
Contact process of sulphuric acid manufacture Eliminates absorber Yields acid of higher concentration than chamber process Is obsolete Yields acids of lower concentration than chamber process TRUE ANSWER : ? YOUR ANSWER : ?
Fumigant insecticides Emit poisonous vapour None of these Are absorbed throughout the plant Kill insects, when they eat it TRUE ANSWER : ? YOUR ANSWER : ?
Comparing sulphate process with sulphite process, we find that __________ in the later. Temperature is more in the former whereas pressure is more Both temperature & pressure in the former is less than that Pressure is more in the former whereas temperature is less Both temperature & pressure in the former is more than that TRUE ANSWER : ? YOUR ANSWER : ?
Catalytic oxidation of toluene produces Benzene Phenol Styrene Tri-nitro-toluene TRUE ANSWER : ? YOUR ANSWER : ?
Hydrogenation of edible vegetable oils Increases their melting point Is done in presence of nickel catalyst All of these Is an exothermic reaction TRUE ANSWER : ? YOUR ANSWER : ?
Concentration of sulphide ores is done usually by Smelting Froth floatation Electro magnetic separation Roasting TRUE ANSWER : ? YOUR ANSWER : ?
Helium is produced on commercial scale from Coke oven gas None of these Air Natural gas TRUE ANSWER : ? YOUR ANSWER : ?