chemical engineering chemical process MCQs – Page 21

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical process Mcqs

401. A unit operation is exemplified by the process of ___________________?
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A. Desorption

B. Combustion

C. Reduction

D. Nitration

402. Pick out the wrong statement ?
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A. None of these

B. Production of cold SBR employs lower pressure as compared to that of hot SBR

C. Cold rubber (SBR) is superior as compared to hot rubber (SBR)

D. Polymerisation temperature can modify the properties of SBR

403. Claude process of gas liquefaction employs___________________?
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A. Heat exchange with colder stream

B. Joule-Thomson expansion cooling

C. Adiabatic expansion against a piston or in a turbine

D. Merely compression of gas beyond its critical pressure

404. Glycerine is not used in the____________________?
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A. Conditioning and humidification of tobacco

B. Manufacture of pharmaceuticals

C. None of these

D. Manufacture of explosive

405. Coke used for the production of calcium carbide should have____________________?
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A. All A , B. and C.

B. Low ash content

C. Low ignition temperature

D. High electrical resistivity

406. _____________ is used as a catalyst in fat splitting ?
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A. Ni

B. V2O5

C. FeO

D. ZnO

407. Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of_________________?
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A. Carbohydrate

B. Collagen

C. Tannin

D. Molasses

408. Cumene (isopropyl benzene) is made by ____________________?
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A. Propylene alkylation of benzene

B. None of these

C. Oxidation of naphthalene

D. Polymerisation of a mixture of benzene & propylene

409. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the_______________?
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A. Synthesis of oleum

B. Fertiliser manufacture

C. Water treatment

D. Car battery solution

410. Unsaturated oils compared to saturated oils have___________________?
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A. Higher melting point & lower reactivity to oxygen

B. Lower melting point & lower reactivity to oxygen

C. Higher melting point & higher reactivity to oxygen

D. Lower melting point & higher reactivity to oxygen

411. Alcohol percentage in molasses may be around _____________________?
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A. 85

B. 70

C. 10

D. 40

412. Wax is a___________________?
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A. Mixture of glycerides of fatty acids

B. Mixture of glycerides

C. Mixture of esters of polyhydric alcohols excepting glycerine

D. Liquid at room temperature

413. 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.

414. Sucrose is a disaccharide consisting of____________________?
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A. Glucose and fructose

B. Fructose and galactose

C. Glucose and galactose

D. Glucose and glucose

415. The product obtained on mixing calcium oxide with water is called __________________?
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A. Slaked lime

B. Quicklime

C. Milk of lime

D. None of these

416. All enzymes are made of______________________?
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A. Carbohydrates

B. Amino acids

C. Fats

D. Proteins

417. Hollander beater used during paper pulp manufacture does not facilitate the ______________ of fiber?
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A. Cutting

B. Strengthening

C. Fibrillation

D. Hydration

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

B. Iron

C. Alumina

D. Vanadium

419. More than 100 percent of _________________ is present in oleum?
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A. H2SO4

B. SO3

C. SO2

D. H2SO3

420. Liquefaction of gases cannot be done by___________________?
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A. Exchange of heat with colder stream

B. Adiabatic expansion against a piston or in a turbine

C. Merely compressing it beyond critical pressure

D. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

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