chemical engineering MCQs – Page 70

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs
1381. Rotary kiln is not involved in the production of___________________?
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A. Cement

B. None of these

C. Lime from limestone

D. Slaked lime from quick lime
1382. Deacons method is used for the manufacture of____________________?
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A. Common salt

B. Graphite electrode

C. Chlorine

D. Glaubers salt

1383. ______________ are added in lacquers to remove film brittleness and to improve adhereness?
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A. Solvents

B. Film forming materials

C. Plasticisers

D. Diluents

1384. The basic difference between vegetable oils and fats is in their ___________________?
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A. Chemical properties

B. Composition

C. Physical state

D. Density

1385. Plasticisers are added to paints to______________________?
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A. Give elasticity & prevent cracking of the film

B. Make glossy surface

C. Increase atmospheric oxidation

D. Make it corrosion resistant

1386. Alcohol content in freshly prepared natural and fortified wine may be respectively around ______________ percent ?
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A. 7-14 and 40-50

B. 14 30 and 40-50

C. 10 20 and 40 50

D. 7-14 and 14-30
1387. Neoprene is the trade name of___________________?
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A. Polychlorophrene

B. Polyurethane

C. Phenol formaldehyde

D. Styrene-butadiene rubber

1388. The biochemical treatment applied to sewage effluents is a process of__________________?
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A. Dehydration

B. Reduction

C. Polymerisation

D. Oxidation
1389. Basic oxide is absent in ___________________ glass?
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A. Flint

B. Quartz

C. Pyrex

D. All A, B. & C

1390. Hydrochloric acid is also known as_________________?
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A. Strong organic acid

B. Oil of vitriol

C. Muriatic acid

D. Green acid

1391. Silicone is a/an ___________________?
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A. Monomer

B. Thermoplastic

C. Inorganic polymer

D. None of these

1392. Bordeaux mixture is a/an________________?
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A. Inorganic fungicide

B. Insecticide

C. Fertiliser

D. Explosive

1393. ___________________ iron is the purest form of iron?
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A. Cast

B. High silicon

C. Pig

D. Wrought
1394. ______________ is produced by the dehydrogenation of ethyl benzene ?
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A. Phenol

B. Cumene

C. Styrene

D. Ethyl alcohol

1395. Thermal pyrolysis of ethylene dichloride produces___________________?
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A. Vinyl chloride

B. Ethylene oxide

C. Trichloroethylene

D. Ethanol amine

1396. Oxidation of ortho-xylene in presence of ______________ catalyst is done to produce phthalic anhydride on commercial scale ?
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A. Iron

B. Vanadium

C. Alumina

D. Nickel

1397. Lindane is____________________?
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A. Not a fumigant

B. BHC (Benzene Hexachloride) containing 99% ?-isomer

C. A by-product of BHC manufacture

D. Both B. and C.

1398. Very fine suspended and colloidal impurities are removed from water by a process called___________________?
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A. Coagulation

B. Sedimentation

C. Disinfection

D. Softening

1399. Good quality of edible salt is obtained from brine by the process of__________________?
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A. Vacuum evaporation

B. Solar evaporation

C. Freeze drying

D. Electrolysis

1400. In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the__________________?
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A. Dibasic acid and the ring

B. None of these

C. Diamine and the dibasic acid

D. Diamine and the ring