0% 0 Chemical Process Quiz 9 1 / 50 Styrene (a monomer for the production of polystyrene) is commercially produced by ______? Fermentation of starch Dehydration of ethyl alcohol followed by hydrogenation Reacting ethylene oxide with acetaldehyde Catalytic dehydrogenation of ethyl benzene 2 / 50 Separation of fresh water from sea water can be done by the ________ operation ? Osmosis Absorption Adsorption Reverse osmosis 3 / 50 Solvent extracted oil_________? Has low free fatty acid content Has more of unsaturates Is odourless None of these 4 / 50 Starting raw material for the manufacture of Maleic anhydride is_____? Neither A. nor B. Either A. or B. n-butene Benzene 5 / 50 Sodium carbonate (soda ash) is not used in the manufacture of_____? Baking powder Detergents Sugar Fire extinguishers 6 / 50 Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate ? Has high water solubility and is unstable Is prone to thermal decomposition All A , B. and C. Is soluble in ammonium chloride and potassium chloride solution 7 / 50 SO2 is bubbled through hot sugar cane juice to________? Increase the amount of molasses Increase the crystal size Act as an acidifying agent Increase its concentration 8 / 50 Stereospecific agents are exemplified by_________? All A , B. & C Radiation Supported metal oxide catalysts Ziegler catalysts 9 / 50 Silicon carbide is a/an________? Abrasive Adhesive Brittle material Type of glass 10 / 50 RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically______? Cyclo trimethylene trinitramine Trinitrobenzene Trinitro resorcinol Cyclo tetramethylene tetranitramine 11 / 50 Sizing material is incorporated in paper to_____? Increase its brightness Increase its thickness Increase its flexibility & opacity Impart resistance to penetration by liquids 12 / 50 Pure rectified spirit contains about __________ percent alcohol? 45 99.5 95 70 13 / 50 Sea weeds are an important source of__________? Chlorine Fluorine Iodine Bromine 14 / 50 Refractory bricks having high thermal conductivity is desirable, when it is to be used in the __________? Recuperator Rotary kiln L.D. converter Blast furnace 15 / 50 Rancidity of the fatty oil can be reduced by its___________? Decoloration Hydrogenation Oxidation Purification 16 / 50 Resistance to fusion of the refractory under a steady rising temperature condition is called ______ ? Refractoriness Both A. & B. Neither A. nor B. Spalling 17 / 50 Reaction of an alcohol with organic acid is called the _________ reaction? Esterification Neutralisation Saponification Acidification 18 / 50 Setting of plaster of Paris is accompanied with_____? Dehydration Hydration Loss of CO2 Hydrolysis 19 / 50 Sea water contains about ________ ppm of bromine ? 70 1700 5 500 20 / 50 Salt is the basic raw material for the manufacture of______? Cement Caustic soda Glass Potteries 21 / 50 Sodium salt of higher molecular weight fatty acid is termed as the ________ soap? Soft Hard Metallic Lubricating 22 / 50 Shaving soaps are______? Metallic soaps compounded with frothing agents High free alkali soaps having excess of cane sugar and alcohol None of these Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property 23 / 50 Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces _________? PVC Nylon-6 Polyester Dacron 24 / 50 Reaction of calcium carbide with water produces a gas, which is used__________? As an illuminant For metal cutting/welding Neither A. nor B. Both A. & B. 25 / 50 Riboflavin is a/an______? Anaesthetics Analgesic drug Anti-malarial drug Vitamin 26 / 50 Roasting of metallurgical ores is done mainly to _____? Remove CO2 & H2O Sinter the ore Remove arsenic & sulphur Dehydrate it 27 / 50 Salt is added in the kettle during soap manufacture to separate _____? The unsaponified fat from soap Glycerine from lye The metallic soap Soap from lye 28 / 50 Soap cannot be used with hard water, because __________? None of these Hard water contains sulphate They form insoluble calcium soaps which precipitate They attract back the removed dirt 29 / 50 Solvent used for extraction of oil is_______? Hexane Furfural Methyl ethyl ketone None of these 30 / 50 Starting raw material for the manufacture of alum is__________? Bauxite Alumina Ammonium bicarbonate Gypsum 31 / 50 Rotary kiln is not involved in the production of_____? Slaked lime from quick lime Lime from limestone None of these Cement 32 / 50 Styrene is produced from ethyl benzene by the process of_________? Alkylation Oxidation Dehydration Dehydrogenation 33 / 50 Reverse osmosis is normally used for the________? Purification of oxygen Separation of helium from natural gas Desalination of brackish water to produce potable (drinking) water Separation of isotopes of uranium from gaseous uranium hexafluoride 34 / 50 Shrinkage volume in cement setting does not depend upon the _______? Drying period Ambient temperature fluctuation Water to cement ratio Sand to cement ratio 35 / 50 Solvay process is used for the manufacture of______? Caustic soda Soda ash Soda lime Caustic potash 36 / 50 Saponification number of an oil or fat______? Detects its adulteration Is inversely proportional to its molecular weight All A , B. & C. Gives an idea about its molecular weight 37 / 50 Sand and _______ is fused at 1300?C, to produce sodium silicate ? Sodium sulphate Soda ash Coke Limestone 38 / 50 Salt cake is chemically represented by__________? Na2SO4 CaSO4. ?H2O BaSO4 MgSO4 39 / 50 Starting material for the production of styrene butadiene rubber (SBR) is_________? Ethylene Both A. & B. Neither A. nor B. Ethyl alcohol 40 / 50 Sodium chloride content in sea water is about ________ gms/liter? 25 50 2 10 41 / 50 Refractory bricks burnt at very high temperature have got_______? Greater resistance to corrosion by slags High spalling tendency None of these Less resistance to corrosion by slags 42 / 50 Saponification value/number of an oil or fat is a measure of its _____? Insoluble fatty acid content Degree of unsaturation of the fatty acids present in it Fatty acid content Average molecular weight 43 / 50 Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about ______ ?C ? -183 -196 -103 -53 44 / 50 Silicone is a/an _____? Inorganic polymer None of these Monomer Thermoplastic 45 / 50 Soaps remove dirt by ______? None of these Increasing the surface tension Supplying hydrophilic group Decreasing wettability 46 / 50 Removal of dirt/soil by soaps or detergent does not involve the ________ of soil ? Wetting Emulsification Dispersion Precipitation 47 / 50 Raw materials used for producing _________ cement does not contain iron oxide? White Pozzolan Slag Waterproof 48 / 50 Rosin soap is added during paper manufacture to______? Impart adhesive properties Improve opacity Impart resistance to penetration by liquids None of these 49 / 50 Styrene is produced from ethyl benzene by the process of___________? Dehydration Dehydrogenation Oxidation Alkylation 50 / 50 Solvay process as compared to dual process (i.e. modified Solvay process) ? Both B. and C. Has less corrosion problems Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl Can use low grade brine Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemical Process Quiz 8 Chemical Process Quiz 10Next
