chemical engineering MCQs – Page 68

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 Review each marked answer and report any item that may be outdated or unclear.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
1341. Analgesic drugs are__________________?
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A. Used in the treatment of typhoid

B. Pain relievers

C. Used in the treatment of T.B.

D. Antibiotics

1342. Pick out the wrong statement pertaining to nitric acid ?
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A. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)

B. About 90% of nitric acid is manufactured by Ostwalds process

C. It is a strong mono basic acid which reacts with almost all the metals except noble metals

D. Arc process of nitric acid manufacture is economical as compared to Ostwalds process
1343. Chemical name of alum is__________________?
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A. Aluminium chloride

B. Calcium sulphate

C. Aluminium sulphate

D. Barium sulphate

1344. Temporary hardness of water can be removed by__________________?
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A. Boiling

B. Addition of lime

C. Filtration (through gravity sand filter)

D. Addition of alum (a coagulant)

1345. H2S is scrubbed from refinery gases by absorption using ________________________?
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A. Ethanol amine

B. Chilled water

C. Dilute H2SO4

D. Tri-butyl phosphate

1346. Dichloro diphenyl ________________ is the full form of DDT (an insecticide) ?
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A. Trichloromethane

B. Trichloroethane

C. Tetrachloromethane

D. Tetrachloroethane

1347. Epoxy resin__________________?
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A. Is an elastomer

B. Is a good adhesive

C. Cannot be used for surface coatings

D. Is a polyester

1348. The gasification reaction represented by, C + H2O = CO + H2, is a/an _________________ reaction?
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A. Endothermic

B. Catalytic

C. Exothermic

D. Autocatalytic

1349. Pick out the false statement pertaining to water treatment ?
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A. Water with pH value less than 7, is acidic

B. Sodium sulphate or sodium carbonate do not cause hardness in water

C. Aeration of water is effective in CO2 removal

D. The zeolite water softening process reduces the hardness of water by not more than 50%
1350. Pick out the wrong statement ?
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A. Total sugar content in molasses is about 10%

B. centration of enzymes

C. pectively

D. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye

E. Protein catalysts are called enzymes

F. The rate of chemical reaction is independent of the concentration of reactants at high

1351. ________________ is the major constituent of the Portland cement?
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A. Calcium oxide

B. Calcium carbonate

C. Tricalcium silicate

D. Calcium sulphate

1352. Portland cement consists mainly of__________________?
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A. CaO & Al2O3

B. CaO & SiO2

C. SiO2 & Al2O3

D. CaO & Fe2O3

1353. Ethanol amine is produced using ammonia and_________________?
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A. Ethanol

B. Ethane

C. Ethylene oxide

D. Ethyl benzene

1354. Aryl benzene sulphonate (ABS) is a____________________?
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A. Plasticiser for unsaturated polyester

B. Detergent

C. Starting material for the synthesis of glycerine

D. Coating ingredient for photographic film

1355. Kopper-Totzek coal gasifier_________________?
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A. Operate at very high pressure

B. Can give ammonia synthesis gas (H2 + N2)

C. Cannot use coking coal

D. Is a moving bed reactor

1356. Which of the following, when pyrolysed, produces Perchloroethylene ?
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A. Chlorobenzene

B. Ethylene dichloride

C. Chlorinated paraffin

D. Carbon tetrachloride
1357. Pick out the wrong statement ?
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A. Kraft method of pulp manufacture can process all types of fibrous raw materials

B. Digestion time for bagasse is less than that for wood base materials

C. Both temperature and pressure in the digestor is less in case of the sulphite method as

D. pared to that in the sulphate method

E. None of these
1358. Pick out the wrong statement. Iodine value of an oil or fat is________________?
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A. The number of grams of iodine taken up by 100 gm of oil or fat

B. Helpful in findings its adulteration & its suitability for making soap

C. A measure of its unsaturation

D. Independent of the type of oil, whether it is drying or non-drying
1359. Pick out the wrong statement ?
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A. Oils and fats are alkaloids

B. Enzyme is a complex nitrogenous compound

C. Pasteurisation of milk involves moderate heating followed by cooling

D. Bakeries and breweries make use of yeasts

1360. Which of the following sugars is the sweetest ?
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A. Sucrose

B. Glucose

C. Fructose

D. Lactose