chemical engineering chemical process MCQs – Page 18

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 Review each marked answer and report any item that may be outdated or unclear.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
341. Alcohol is produced by the___________________?
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A. None of these

B. Hydrolysis of an ether

C. Esterification of a fat

D. Oxidation of an aldehyde

342. Comparing sulphate process with sulphite process, we find that ______________ in the later ?
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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

343. Bleaching of paper pulp is done with__________________?
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A. Activated clay

B. Bromine

C. Chlorine or chlorine dioxide

D. Magnesium sulphite

344. 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. None of these

B. Diamine and the dibasic acid

C. Dibasic acid and the ring

D. Diamine and the ring

345. ______________ is produced by the dehydrogenation of ethyl benzene ?
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A. Styrene

B. Ethyl alcohol

C. Phenol

D. Cumene

346. Potassium is kept & transported under ___________________ ?
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A. Liquid ammonia

B. Alcohol

C. Water

D. Kerosene oil
347. The type of high refractive index glass used in optical instruments is _____________ glass?
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A. Flint

B. Pyrex

C. None of these

D. Crookes

348. Isopropyl benzene produced by alkylation of benzene with propylene is known as _________________?
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A. Mercaptans

B. Gelatin

C. Cumene

D. Neoprene

349. Terylene is__________________?
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A. Same as Dacron

B. A polyester

C. Both A. & B.

D. Neither A. nor B.

350. Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove____________________?
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A. Turbidity

B. Bacteria

C. All A , B. and C.

D. Colour

351. High temperature carbonisation of coal produces _____________________ ?
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A. None of these

B. Less of gases compared to liquid products

C. Larger quantity of tar compared to low temperature carbonisation

D. Inferior coke compared to low temperature carbonisation

352. 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
353. Main use of hydrazine is___________________?
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A. As a disinfectant

B. In water treatment

C. As fire retardant

D. As a rocket fuel
354. Coke oven gas consists mainly of ____________________?
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A. CH4, & CO

B. H2, & CH4

C. CO, & CO2

D. H2, & CO

355. Dry ice (solidified CO2) is used for the___________________?
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A. Storage & shipment of frozen foods and ice-creams

B. Liquefaction of permanent gases

C. None of these

D. Liquefaction of natural gas

356. A substance produced by a living organism and capable of anti-microbial activity is called a/an < ____________________?
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A. Antiseptic

B. None of these

C. ong>A. Antibiotic</strong>

D. Disinfectant

357. 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at _____________ C ?
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A. 250-280

B. < 0

C. 10-30

D. 500-600

358. Pick out the wrong statement?
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A. Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%

B. Decomposition of sulphuric acid on heating does not start before its boiling

C. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with

D. Vitriol oil is nothing but technical sulphuric acid

E. phur trioxide

359. Helium is produced on commercial scale from__________________?
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A. Air

B. None of these

C. Natural gas

D. Coke oven gas

360. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?
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A. Oxides of nitrogen & Cr2O3

B. V2O5 & Cr2O3.

C. Oxides of nitrogen & V2O5 on a porous carrier

D. V2O5 on a porous carrier & oxides of nitrogen