0% 0 Chemical Process Quiz 8 1 / 50 Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like__________? Fragile nature All A, B. and C. High cost Easy poisoning tendency 2 / 50 Pick out the wrong statement ? Fibrillation of fibre during paper manufacture is done to develop the strength in paper Bagasse fibre contains both lignin & cellulose Presence of sodium sulphate in pulp makes the pulp bleachability poor Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number 3 / 50 Pick out the false statement pertaining to water treatment ? Aeration of water is effective in CO2 removal The zeolite water softening process reduces the hardness of water by not more than 50% Water with pH value less than 7, is acidic Sodium sulphate or sodium carbonate do not cause hardness in water 4 / 50 Pick out the wrong statement ? The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes Total sugar content in molasses is about 10% Protein catalysts are called enzymes Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively 5 / 50 Pick out the exothermic reaction out of the following ? MgCO3 = MgO + CO2 C + H2O = CO + H2 CaC2 + H2O = Ca(OH)2 + C2H2 All (A), B. and (C) 6 / 50 Plasticisers are added to paints to________? Increase atmospheric oxidation Make it corrosion resistant Make glossy surface Give elasticity & prevent cracking of the film 7 / 50 Pick out the wrong statement? Ordinary glass is represented chemically by Na2O . CaO . 6SiO2 Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide Red color is imparted to glass by addition of arsenic oxide Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate 8 / 50 Phosphoric acid is prepared from_______? None of these Rock phosphate Cryolite Chalcopyrite 9 / 50 Portland cement consists mainly of___________? CaO & Al2O3 SiO2 & Al2O3 CaO & SiO2 CaO & Fe2O3 10 / 50 Pick out the wrong statement? Basic dyes (e.g. amino derivatives) are applied mostly to paper Mordant dyes are applied mainly to wools None of these Azoic dyes are mostly applied on cotton fabrics 11 / 50 Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have_____? Compressive strength much greater than their tensile strengths High electrical insulation properties Sharp melting points Low co-efficient of thermal expansion 12 / 50 Pick out the wrong statement ? Enzyme is a complex nitrogenous compound Pasteurisation of milk involves moderate heating followed by cooling Oils and fats are alkaloids Bakeries and breweries make use of yeasts 13 / 50 Pick out the wrong statement? Gypsum is added to Portland cement to lengthen its setting time None of these Dry process is used for the manufacture of cement, when the raw material is blast furnace slag Portland cement is made employing wet process 14 / 50 Pick out the wrong statement ? Contact process of sulphuric acid manufacture produces pure acid of concentration ? 98% 75% oleum can be produced by distillation of 20% oleum Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80% Contact process of sulphuric acid manufacture uses nickel as the catalyst 15 / 50 Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called_____? Silicone Epoxy resin Polyurethane Teflon 16 / 50 Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because___________? Tar neutralises the residual acids present in pitch Its calorific value is very less All A, B. and C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop 17 / 50 Pig iron is produced by blast furnaces in India using mostly the iron ore named ________? Chalcopyrite Magnetite Hematite Siderite 18 / 50 Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction___________? Increases with the increasing flake size keeping the flake thickness constant Decreases with decrease of thickness of the flakes Increases considerably with the rise of temperature Decreases as the moisture content of flakes increases 19 / 50 Pick out the wrong statement ? None of these Cold rubber (SBR) is superior as compared to hot rubber (SBR) Polymerisation temperature can modify the properties of SBR Production of cold SBR employs lower pressure as compared to that of hot SBR 20 / 50 Potassium is kept & transported under _____ ? Alcohol Liquid ammonia Kerosene oil Water 21 / 50 Presence of carbonaceous matter in the sewage______? All A, B. and C. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures Increases the quantity of chlorine used for its purification Reduces sulphate ions to sulphides causing obnoxious smell 22 / 50 Production of one ton of cement requires about ________ tons of limestone ? 0.6 2.2 1.2 3.8 23 / 50 Process conditions in fermentator used for production of penicillin is______? 30?C, 200 mm Hg (absolute) 90?C, 45 atm 50?C, l0 atm 25?C, 2 atm 24 / 50 Pick out the wrong statement ? Digestion time for bagasse is less than that for wood base materials Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method None of these Kraft method of pulp manufacture can process all types of fibrous raw materials 25 / 50 Pick out the wrong statement ? Strongly caking coal should not be used in the Lurgi gasifier Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels Water gas is called blue gas because of the color of the flame, when it is burnt Acetylene gas cannot be used for illumination purpose 26 / 50 Plaster of Paris is ___________? CaSO4.?H2O Same as gypsum Used for setting of broken bones Both A. and B. 27 / 50 Phthalic anhydride is made by the ________? Oxidation of benzene Oxidation of naphthalene Dehydrogenation of ethyl benzene None of these 28 / 50 Producer gas consists mainly of__________? CO, CO2 N2, H2 CO, H2 H2, CH4 C2H2, CO2, H2 29 / 50 Phthalic anhydride is produced by the oxidation of __________? Benzene Naphthalene Aniline Toluene 30 / 50 Polyvinyl chloride (PVC) is______? Made by employing emulsion polymerisation A thermosetting material None of these A condensation polymerisation product 31 / 50 Polymethyl methacrylate (PMMA) is known as ______? Teflon Bakelite Nylon-6 Perspex 32 / 50 Phthalic anhydride is used______? As plasticisers For making nylon-6 In making PVC In insecticides manufacture 33 / 50 Poly Tetrafluoroethylene (P.T.F.E.) is known as_____? Celluloid Dacron Teflon Bakelite 34 / 50 Polythene is a/an _______ polymerisation product? Thermosetting None of these Addition Condensation 35 / 50 Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of__________? Lead Sulphur Arsenic Carbon 36 / 50 Pick out the wrong statement. Iodine value of an oil or fat is_________? Independent of the type of oil, whether it is drying or non-drying A measure of its unsaturation Helpful in findings its adulteration & its suitability for making soap The number of grams of iodine taken up by 100 gm of oil or fat 37 / 50 Pick out the wrong statement pertaining to the soap manufacture? Both laundry as well as toilet soaps are manufactured by hot process Colourless rosin is used in the manufacture of laundry soaps Organic pigments are used as colouring materials in the soap manufacture Transparent soaps are made by cold process 38 / 50 Plasticisers are added to synthetic plastics to______? All A, B. and C. Develop new improved properties not present in the original resins Improve workability during fabrication Impart flexibility 39 / 50 Pick out the endothermic reaction out of the following ? C+ ?O2 = CO CO + 3H2 = CH4 + H2O CaCO3 = CaO + CO2 CO + ?O2 = CO2 40 / 50 Presence of sodium tripolyphosphate (an additive) in synthetic detergent_____? Does not allow redeposition of dirt on the cleaned surface Inhibits its corrosive effects Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions) None of these 41 / 50 Pick out the true statement pertaining to water treatment ? Slow sand filters can remove colour completely Application of activated carbon reduces the temporary hardness of water Activated carbon can be used for taste & odour control without subsequent filtration Normally, the turbidity is removed by adding a coagulant prior to sedimentation 42 / 50 Pick out the wrong statement pertaining to nitric acid ? Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2) Arc process of nitric acid manufacture is economical as compared to Ostwald?s process It is a strong mono basic acid which reacts with almost all the metals except noble metals About 90% of nitric acid is manufactured by Ostwald?s process 43 / 50 Pick out the wrong statement ? Lead azide is a popular military explosive TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur 44 / 50 Pick out the wrong statement? Vitriol oil is nothing but technical sulphuric acid The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98% Decomposition of sulphuric acid on heating does not start before its boiling 45 / 50 Prussian blue is chemically represented by___________? Ca SO4 . 2H2O Fe4 [Fe (CN6)3] AlF3 . 3NaF FeO.TiO2 46 / 50 Polycaprolactam is commercially known as_____? Nylon-66 Nylon-6 Dacron Rayon 47 / 50 Pick out the wrong statement ? Ethanolamines are produced by using ammonia and ethylene oxide as raw material Raw materials for DDT manufacture are benzene and chlorine In nylon-6, the number 6 represents the total number of carbon atoms in the ring Catalytic hydrogenation of carbon monoxide produces methyl alcohol 48 / 50 Presence of H2S in raw water (to be chlorinated) results in the_______? Reduced softening capacity of zeolite Easy removal of its hardness Increased dosage of chlorine to provide a disinfecting residual in the water None of these 49 / 50 Production of alcohol by fermentation of molasses is a/an ______ process? Both B. and C. Anaerobic Endothermic Aerobic 50 / 50 Production of one ton of dry paper pulp requires about _____ tons of bamboo or wood? 1 2.5 5 10 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 7 Chemical Process Quiz 9Next
