Which allotrope of sulphur is insoluble in carbon disulphide? Monoclinic sulphur Plastic sulphur Milk of sulphur Rhombic sulphur TRUE ANSWER : ? YOUR ANSWER : ?
Glauber's salt is chemically Potassium chlorate Calcium sulphate Potassium sulphate None of these TRUE ANSWER : ? YOUR ANSWER : ?
Percentage of glycerene present in the spent lye obtained during soap manufacture is about 0.5 5 35 20 TRUE ANSWER : ? YOUR ANSWER : ?
Kopper-Totzek coal gasifier Operate at very high pressure Can give ammonia synthesis gas (H₂ + N₂) Is a moving bed reactor Cannot use coking coal TRUE ANSWER : ? YOUR ANSWER : ?
An oil is converted into fat by its Hydrolysis Hydrogenation Hydrocracking Hydration TRUE ANSWER : ? YOUR ANSWER : ?
Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulphonic acid produces sodium dodecylbenzene sulphate, which is a/an Analgesic drug Detergent Soap Explosive TRUE ANSWER : ? YOUR ANSWER : ?
Nicotine is Neither A nor B Obtained by treating by-products of the tobacco processing industry Both A and B A volatile alkaloid TRUE ANSWER : ? YOUR ANSWER : ?
Ethyl alcohol cannot be produced None of these From waste sulphite substrate of paper mills By esterification and hydroloysis of ethylene From molasses TRUE ANSWER : ? YOUR ANSWER : ?
__________ of rubber decreases after its vulcanisation. Maximum service temperature Resistance to the action of organic solvent Tackiness Tensile strength TRUE ANSWER : ? YOUR ANSWER : ?
Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have Low co-efficient of thermal expansion Sharp melting points Compressive strength much greater than their tensile strengths High electrical insulation properties TRUE ANSWER : ? YOUR ANSWER : ?