Coke used for the production of calcium carbide should have All of these Low ash content High electrical resistivity Low ignition temperature TRUE ANSWER : ? YOUR ANSWER : ?
Starting material for the commercial production of ethyl alcohol in India is Maize Rice Fruit of Mahua tree Molasses TRUE ANSWER : ? YOUR ANSWER : ?
The most widely used coagulant for removing suspended impurities from water is Bleaching powder Chlorine Alum Calcium sulphate TRUE ANSWER : ? YOUR ANSWER : ?
Transparent soaps (e.g. Pears) are Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency Metallic soaps with frothing agent from which glycerine has not been recovered Metallic soaps with frothing agent and free stearic acid to achieve transparency None of these TRUE ANSWER : ? YOUR ANSWER : ?
Plasticisers are added to paints to Increase atmospheric oxidation Make glossy surface Give elasticity & prevent cracking of the film Make it corrosion resistant TRUE ANSWER : ? YOUR ANSWER : ?
Celluloid is chemically Cellulose acetate Cellulose acetate butyrate Regenerated cellulose Cellulose nitrate TRUE ANSWER : ? YOUR ANSWER : ?
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent. > 30 < 10 75 50 TRUE ANSWER : ? YOUR ANSWER : ?
The most commonly used substance to speed up the sedimentation of sewage is Sodium bisulphite Sulphuric acid Lime Chlorine TRUE ANSWER : ? YOUR ANSWER : ?
A bio-catalyst produced by living cells which acts independent of the cell is called a/an Nutrient Substrate Enzyme None of these TRUE ANSWER : ? YOUR ANSWER : ?
Resistance to fusion of the refractory under a steady rising temperature condition is called Spalling Both A & B Refractoriness Neither A nor B TRUE ANSWER : ? YOUR ANSWER : ?