1) Glycerine is not used in the____________________? a. Manufacture of explosive b. Conditioning and humidification of tobacco c. Manufacture of pharmaceuticals d. None of these
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2) High acid value of an oil or fat is an indication of _____________________? a. Storage under improper conditions b. Absence of unsaturation c. Its smaller molecular weight d. None of these
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3) Brackish water which contains mostly dissolved salt, can be purified by the __________________ process? a. Reverse osmosis b. Sand filter c. Lime soda d. Permutit
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4) Dacron is a/an _________________? a. Polyester b. Unsaturated polyester c. Polyamide d. Inorganic polymer
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5) Litharge is________________? a. Lead oxide b. Zinc oxide c. Zinc sulphide d. Cellulosic photographic material
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6) Comparing sulphate process with sulphite process, we find that ______________ in the later ? a. Both temperature & pressure in the former is less than that b. Both temperature & pressure in the former is more than that c. Temperature is more in the former whereas pressure is more d. Pressure is more in the former whereas temperature is less
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7) Coal tar is used as a___________________? a. Binding material for coal briquettes b. Fuel in rotary kiln c. Binder in making carbon electrodes d. All A , B. and C.
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8) With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide________________? a. Increases b. Increases linearly c. Decreases d. Decreases linearly
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9) Trinitrotoluene (TNT), an explosive, is made by the nitration of ____________________? a. Nitrobenzene b. Toluene c. Nitrotoluene d. Benzene
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10) _____________ is used as a catalyst in fat splitting ? a. ZnO b. Ni c. V2O5 d. FeO
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11) In the production of soda ash by Solvay process, the by-product is____________________? a. CaCl2 b. NH4Cl c. NH3 d. NaOH
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12) Acetone is produced by catalytic dehydrogenation of_________________? a. Phenol b. Naphthalene c. Isopropanol d. Ethyl benzene
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13) ______________ is produced using molasses as the starting raw material ? a. Methyl alcohol b. Ethyl alcohol c. Benzol d. Dimethyl ether
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14) How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln ? a. 500°C b. 750°C c. 1000°C d. 1500°C
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15) Vulcanisation of rubber____________________? a. Decreases its tensile strength b. Increases its ozone & oxygen reactivity c. Increases its oil & solvent resistance d. Converts its plasticity into elasticity
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16) Hydrazine is largely used____________________? a. As a starting material for ‘hypo’ b. In photographic industry c. As rocket fuel d. In printing industry
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17) Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction__________________? a. Decreases with decrease of thickness of the flakes b. Increases with the increasing flake size keeping the flake thickness constant c. Increases considerably with the rise of temperature d. Decreases as the moisture content of flakes increases
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18) Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap? a. Hard b. Soft c. Metallic d. Lubricating
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19) Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ? a. Xanthates b. Stearic acid c. Calcium & aluminium stearate d. Formic acid
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20) The product obtained on mixing calcium oxide with water is called __________________? a. Quicklime b. Slaked lime c. Milk of lime d. None of these
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21) Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________? a. Brine b. Chloramines c. Sodium bisulphite d. Liquid chlorines
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22) The purpose of adding Na2CO3 to water of low alkalinity is to__________________? a. Permit the use of alum as a coagulant b. Increase the softening capacity of zeolite c. Facilitate easy regeneration of zeolite d. All A , B. and C.
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23) Main constituents of Portland cement are calcium aluminate and__________________? a. Gypsum b. Silicates c. Sodium silicate d. Carbonates
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24) Glauber’s salt is chemically represented by____________________? a. Na2SO4.10H2O b. CaCl(OCl) c. CaSO4.H2O d. (NH4)2SO4
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25) Which of the following is used as a binding material in soap to improve soap texture ? a. Rosin b. Borax c. Benzyl acetate d. Sodium carbonate
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26) Heating of _______________ to 120°C, produces plaster of paris ? a. Blue vitriol b. Gypsum c. Calcium silicate d. Calcium sulphate
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27) Bromine content in sea water may be around _________________ ppm? a. 70 b. 640 c. 1875 d. 2500
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28) Margarine is a/an____________________? a. Fat b. Explosive c. Plasticiser d. Rocket propellant
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29) Cumene is the starting material for the production of________________? a. Benzoic acid b. Phenol and acetone c. Isoprene d. Styrene
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30) Liquefaction of gases cannot be done by___________________? a. Exchange of heat with colder stream b. Adiabatic expansion through a throttle valve (Joule-Thomson expansion) c. Merely compressing it beyond critical pressure d. Adiabatic expansion against a piston or in a turbine
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31) Alcohol percentage in molasses may be around _____________________? a. 10 b. 40 c. 70 d. 85
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32) Adipic acid is an intermediate in the manufacture of________________? a. Perspex b. Nylon-66 c. Polystyrene d. Bakelite
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33) The process used for the manufacture of ethyl alcohol from molasses is_________________? a. Distillation b. Dehydration c. Dehydrogenation d. None of these
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34) Presence of sodium tripolyphosphate (an additive) in synthetic detergent___________________? a. Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions) b. Inhibits its corrosive effects c. Does not allow redeposition of dirt on the cleaned surface d. None of these
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35) Ultimate analysis of coal determines its _______________________ content? a. Carbon, hydrogen, nitrogen & sulphur b. Carbon, ash, sulphur & nitrogen c. Carbon, sulphur, volatile matter & ash d. Carbon, volatile matter, ash & moisture
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36) Poly Tetrafluoroethylene (P.T.F.E.) is known as___________________? a. Bakelite b. Teflon c. Celluloid d. Dacron
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37) Average sulphur content in Indian pyrites is about _________________ percent? a. 15 b. 35 c. 55 d. 70
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38) Triple superphosphate is manufactured by reacting ____________________? a. Phosphate rock with phosphoric acid b. Phosphate rock with sulphuric acid c. Phosphate rock with nitric acid d. Ammonium phosphate with phosphoric acid
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39) Gun powder uses_____________________? a. Sulphur b. Charcoal c. Potassium nitrate d. All A , B, & C.
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40) In industrial nomenclature, alcohol means_________________? a. Butyl alcohol b. Propyl alcohol c. Ethanol d. Methyl alcohol
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