0% 0 Chemical Process Quiz 11 1 / 50 Which glass is usually used in optical work ? Lead glass Fibre glass High silica (borosilicate) glass Photo-sensitive glass 2 / 50 Varnish does not contain________? Pigment Both A. & B. Thinner Neither A. nor B. 3 / 50 The temperature in the calcium carbide furnace is ________ ?C ? 2000-2200 200-300 700-850 4000-4500 4 / 50 Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ? Al2O3 Fe2O3 ZnCl2 AgO 5 / 50 Trinitrotoluene (TNT), an explosive, is made by the nitration of ______? Benzene Toluene Nitrobenzene Nitrotoluene 6 / 50 Thermoplastic materials_______? Are heavily branched molecules Do not soften on application of heat None of these Are solvent insoluble 7 / 50 The most reactive allotropic form of phosphorus is ___________ phosphorus? Violet Black Yellow Red 8 / 50 Ultimate analysis of coal determines its _________ content? Carbon, hydrogen, nitrogen & sulphur Carbon, sulphur, volatile matter & ash Carbon, volatile matter, ash & moisture Carbon, ash, sulphur & nitrogen 9 / 50 Type of glass used in optical work is the _____ glass? Borosilicate Soda-lime Lead Fibre 10 / 50 Unsaturated oils compared to saturated oils have_____? Higher melting point & lower reactivity to oxygen Lower melting point & higher reactivity to oxygen Lower melting point & lower reactivity to oxygen Higher melting point & higher reactivity to oxygen 11 / 50 Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of_______? Hydrochloric acid Nitric acid Methyl alcohol Formic acid 12 / 50 Which is the main reducing agent during production of iron from iron ore in a blast furnace ? H2 C CO2 CO 13 / 50 Titanium dioxide is a/an _____ colour pigment? Black Blue Yellow White 14 / 50 Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of ___________? 10 kgf/cm2 & 1000?C 100 kgf/cm2 & 500?C 40 kg/cm2 & 200?C 4 kgf/cm2 & 500?C 15 / 50 The process involved in converting rubber into a thin sheet or coating it on fabric is called _____? Extrusion Vulcanisation Calendaring Mastication 16 / 50 Viscose rayon is___________? Cellulose nitrate Regenerated cellulose nitrate None of these Regenerated cellulose acetate 17 / 50 The process used for the manufacture of ethyl alcohol from molasses is__________? Dehydrogenation Dehydration Distillation None of these 18 / 50 Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ______ oil? Non-drying Semi-drying Drying None of these 19 / 50 Wet chlorine gas produced during electrolysis of brine is dehydrated by___________? Passing it through a bed of diatomaceous earth Passing it through a bed of silica gel Spraying 66? Be H2SO4 counter current to the flow of the gas None of these 20 / 50 The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an _______ detergent ? Amphoteric Anionic Semi polar Cationic 21 / 50 Vanillin is a type of______? Anti-pyretic drug Dye Food preservative Flavour 22 / 50 Which is a high grade pulp ? Rag pulp Sulphite pulp Mechanical pulp Sulphate pulp 23 / 50 Varnish does not contain______? Thinner Pigment Dryer Anti-skimming agent 24 / 50 The most stable allotropic form of phosphorous is the __________ phosphorous? White Red Yellow Black 25 / 50 Triple superphosphate is manufactured by reacting ______? Phosphate rock with sulphuric acid Phosphate rock with phosphoric acid Ammonium phosphate with phosphoric acid Phosphate rock with nitric acid 26 / 50 Which is the most efficient absorbent for SO3 out of the following ? 98% H2SO4 20% oleum 65% oleum 78% H2SO4 27 / 50 The terminology ?BTX? used in coal tar distillation industry refers to_____? Benzol-toluol-xylol Benzene-toluene-xylene Benzene-toluol-xylol Benzol-toluene-xylene 28 / 50 Use of chlorine in the treatment of sewage__________? Increases the biological oxygen demand (BOD) Causes bulking of activated sludge Helps in grease separation Aids in flocculation 29 / 50 Trinitro-toluene (TNT) is __________ ? Used in glycerine manufacture An explosive None of these Used in dye manufacture 30 / 50 The yield of tar from high temperature carbonisation of dry coal is about ________ percent? 3 22 12 0.3 31 / 50 Thorium is mainly used ________? In the manufacture of hydrogen bomb As a fissile fuel in a nuclear reactor In the treatment of cancer For the manufacture of gas mantles 32 / 50 Washing soda is chemically represented by __________? NaHCO3 Na2CO3.H2O Na2CO3.10H2O Na2CO3 33 / 50 Viscose rayon is chemically_____? Cellulose nitrate Regenerated cellulose nitrate Regenerated cellulose acetate Cellulose acetate 34 / 50 Thermosetting plastic materials______? Is useful for melt casting Can be repeatedly melted Is useful for spinning Cannot be melted after forming 35 / 50 Wax is a_____? Mixture of esters of polyhydric alcohols excepting glycerine Mixture of glycerides of fatty acids Liquid at room temperature Mixture of glycerides 36 / 50 What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ? Cl2, H2 & NaOH solution Cl2 & Na O2 & H2 Cl2 & H2 37 / 50 Which allotrope of sulphur is insoluble in carbon disulphide ? Rhombic sulphur Plastic sulphur Milk of sulphur Monoclinic sulphur 38 / 50 The product obtained on mixing calcium oxide with water is called ___________? Slaked lime Milk of lime Quicklime None of these 39 / 50 Transparent soaps (e.g. Pears) are______? Metallic soaps with frothing agent from which glycerine has not been recovered 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 and free Stearic acid to achieve transparency None of these 40 / 50 Use of water having dissolved oxygen in boilers promotes_____? Sequestration Scale formation None of these Corrosion 41 / 50 Very fine suspended and colloidal impurities are removed from water by a process called_____? Coagulation Softening Disinfection Sedimentation 42 / 50 The purpose of tanning in leather industry is to______? Stiffen the leather Smoothen the leather Make it flexible Impart water resistance 43 / 50 The type of high refractive index glass used in optical instruments is ______ glass? Flint Pyrex None of these Crookes 44 / 50 The most widely used coagulant for removing suspended impurities from water is___________? Alum Chlorine Calcium sulphate Bleaching powder 45 / 50 Thermal pyrolysis of ethylene dichloride produces_____? Vinyl chloride Ethanol amine Ethylene oxide Trichloroethylene 46 / 50 Vulcanisation of rubber______? Decreases its tensile strength Increases its ozone & oxygen reactivity Converts its plasticity into elasticity Increases its oil & solvent resistance 47 / 50 Thermosetting materials ________? Are solvent soluble Are cross-linked molecules None of these Soften on application of heat 48 / 50 Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is _____ ?C? 5 to 10 75 to 80 -5 to 0 30 to 50 49 / 50 Which form of sulphur is the most stable at room temperature ? Plastic Monoclinic Rhombic Flowers of sulphur 50 / 50 The purpose of adding Na2CO3 to water of low alkalinity is to___________? Permit the use of alum as a coagulant Facilitate easy regeneration of zeolite Increase the softening capacity of zeolite All A , B. and C. 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 10 Chemical Process Quiz 12Next
