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1) Main constituent of limestone is____________________? a. CaCO3 b. MgCO3 c. Na2CO3 d. CaSO4
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2) Refractory bricks burnt at very high temperature have got______________? a. Greater resistance to corrosion by slags b. Less resistance to corrosion by slags c. High spalling tendency d. None of these
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3) Which allotrope of sulphur is insoluble in carbon disulphide ? a. Rhombic sulphur b. Monoclinic sulphur c. Plastic sulphur d. Milk of sulphur
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4) Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of____________________? a. Trichloroethylene b. Perchloroethylene c. Parathion d. Methanol
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5) Multistage catalytic converter is not used in the___________________? a. Conversion of SO2 to SO3 b. NH3 synthesis reaction c. Both A. and B. d. Neither A. nor B.
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6) Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ? a. AgO b. Al2O3 c. ZnCl2 d. Fe2O3
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7) Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ? a. NH3 b. NaCl c. CaO d. Coke
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8) The difference between saponification value and acid value is____________________? a. Called ester value b. Always negative c. Constant for all fatty oils d. None of these
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9) Chrome tanning and vegetable tanning are done for ________________? a. Light & heavy leather respectively b. Heavy & light leather respectively c. Both light & heavy leather d. Neither light nor heavy leather
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10) Main constituents of cotton fiber is__________________? a. Lignin b. Cellulose c. Starch d. Gelatine
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11) ____________________ process is used for producing soda ash? a. Chamber b. Chance c. Tromp d. Solvay
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12) Which of the following fuel gases contains maximum amount of carbon monoxide ? a. Coke oven gas b. Water gas c. Blast furnace gas d. L.D. converter gas
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13) Lubricating greases are a mixture of__________________? a. Mineral oil, soap and additives b. Mineral oil and metallic soap c. Mineral oil and fatty oil d. Fatty oil and metallic soap
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14) Pig iron is produced by blast furnaces in India using mostly the iron ore named _______________? a. Hematite b. Magnetite c. Siderite d. Chalcopyrite
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15) Chalcopyrite is the main ore of_________________? a. Copper b. Lead c. Tin d. Iron
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16) 99.5% purity oxygen is used in_____________________? a. Cutting and welding by oxy-acetylene flame b. Hospitals for medicinal purposes c. Gas masks and artificial breathing apparatus d. All A, B, and C.
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17) Zeigler process__________________? a. Produces high density polyethylene b. Produces low density polyethylene c. Uses no catalyst d. Employs very high pressure
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18) Fat dispersed in water is exemplified by__________________? a. Colloids b. Gel c. Butter d. Emulsion
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19) Dacron is a ___________________? a. Condensation product of Hexamethylene diamine and adipic acid b. Thermosetting material c. Condensation product of dimethyl terephthalate and ethylene glycol d. None of these
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20) Hydrazine (N2H4) is used mainly as a/an__________________? a. Explosive b. Rocket fuel c. Detergents additive d. None of these
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21) Which of the following is an yellow pigment ? a. Titanium dioxide b. Ferrous sulphate c. Lead chromates d. Zinc sulphides
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22) Synthesis gas is a mixture of__________________? a. CO and H2 b. N2 and H2 c. H2, CH4 and CO d. CO2 and H2
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23) ___________________ glass is used for the manufacture of optical glass ? a. Pyrex b. Soda c. Flint d. Crooke’s
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24) Hydrazine is used in water treatment for the removal of___________________? a. Colloidal impurities b. Dissolved oxygen c. Turbidity d. Chlorinous taste
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25) Sugar content in sugarcane on cane basis is about _______________ percent by weight ? a. 1 to 5 b. 5 to 10 c. 15 to 20 d. 20 to 30
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26) ________________ acid is the main constituent of cotton seed oil ? a. Acetic b. Linoleic c. Palmitic d. Oleic
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27) In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst___________________? a. Gives higher conversion efficiency b. Has a longer life and is not poisoned by arsenic c. Handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant d. All A , B. and C.
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28) Nylon-6 is manufactured from ______________________ ? a. Caprolactam b. Hexamethylene diamine and adipic acid c. Hexamethylene diamine and Maleic anhydride d. Hexamethylene diamine and Sebacic acid
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29) Fat splitting catalyst is__________________? a. CaCO3 b. ZnO c. Al2O3 d. Fe
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30) Manufacture of phthalic anhydride uses ______________ as a catalyst ? a. Ni b. Cr c. V2O5 d. Al2O3
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31) The end bleaching agent used to move last traces of colour bodies from the pulp is ____________________? a. Chlorine dioxide (ClO2) b. MgO c. SO2 gas d. Mercaptans
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32) Zeolite is used in the ____________________ ? a. Water treatment b. Glass manufacture c. Hydrogenation of fatty oil as a catalyst d. Development of exposed photographic plate
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33) ____________________ is a thermosetting plastic ? a. Polythene b. Epoxy polymer c. P.V.C. d. Polystyrene
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34) Which is a high grade pulp ? a. Rag pulp b. Mechanical pulp c. Sulphate pulp d. Sulphite pulp
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35) Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials? a. Coke and sand b. Brine and coal c. Coke and caustic soda d. None of these
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36) Wet chlorine gas produced during electrolysis of brine is dehydrated by__________________? a. Spraying 66° Be H2SO4 counter current to the flow of the gas b. Passing it through a bed of diatomaceous earth c. Passing it through a bed of silica gel d. None of these
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37) Nylon-6 is a__________________? a. Polyamide b. Thermosetting resin c. Polyester d. None of these
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38) P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________? a. Bakelite b. Neoprene c. Teflon d. Nylon-66
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39) Ore concentration by froth floatation utilises the ______________ of ore particles ? a. Density difference b. Wetting characteristics c. Terminal velocities d. None of these
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40) Ethanol amine is produced using ammonia and_________________? a. Ethyl benzene b. Ethylene oxide c. Ethanol d. Ethane
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