chemical engineering MCQs – Page 60

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 Review each marked answer and report any item that may be outdated or unclear.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
1181. Digestion of wood-base materials (for manufacture of pulp) is done to __________________?
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A. Prevent deterioration on storage

B. None of these

C. Remove lignin

D. Produce long fibres

1182. Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about ______________ C ?
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A. -196

B. -83

C. -183

D. -218

1183. The yield of tar from high temperature carbonisation of dry coal is about _______________ percent?
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A. 3

B. 0.3

C. 12

D. 22

1184. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?
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A. High cost

B. Easy poisoning tendency

C. Fragile nature

D. All A, B. and C.
1185. Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
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A. 50 60

B. 80 85

C. 15 20

D. 1 2

1186. Molecular weight of plastics ranges from ______________________?
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A. 500 to 5000

B. 5000 to 10000

C. 20000 to 250000

D. 106 to 109

1187. The terminology BTX used in coal tar distillation industry refers to___________________?
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A. Benzol-toluol-xylol

B. Benzene-toluol-xylol

C. Benzene-toluene-xylene

D. Benzol-toluene-xylene

1188. Esterification reaction produces _________________?
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A. Detergent

B. Soap

C. Mercaptans

D. Vanaspati

1189. The enzyme which converts starch into the disaccharides maltose is_________________?
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A. Maltase

B. Diastase

C. None of these

D. Yeast

1190. Fatty material used in soap making is _______________________?
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A. Tallow

B. Fatty acid

C. Detergents

D. Fatty alcohols

1191. Refractory bricks having high thermal conductivity is desirable, when it is to be used in the _________________?
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A. Rotary kiln

B. Blast furnace

C. L.D. converter

D. Recuperator
1192. Salt is the basic raw material for the manufacture of____________________?
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A. Potteries

B. Cement

C. Caustic soda

D. Glass

1193. Oxidation of SO2 to SO3 is favoured by______________________?
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A. Low temperature and low pressure

B. High temperature and high pressure

C. High temperature and low pressure

D. Low temperature and high pressure
1194. _________________ is produced using Polycondensation Reaction?
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A. Polythene

B. None of these

C. Phenol formaldehyde

D. Poly vinyl chloride

1195. The main component of Pyrex glass is_____________________?
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A. Zinc

B. Lead

C. Selenium

D. Boron

1196. Glass is__________________?
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A. Mainly CaO

B. Subjected to galvanising

C. All A , B. and C.

D. A super cooled liquid
1197. Percentage of alcohol in beer may be around ______________________ percent?
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A. 2-8

B. 27-32

C. 4-Jan

D. 18-23

1198. Process conditions in fermentator used for production of penicillin is____________________?
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A. 90C, 45 atm

B. 25C, 2 atm

C. 50C, l0 atm

D. 30C, 200 mm Hg (absolute)

1199. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
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A. Flocculate the impurities

B. Facilitate fast filtration

C. Both A. and B.

D. Neither A. nor B.

1200. The most reactive allotropic form of phosphorus is __________________ phosphorus?
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A. Violet

B. Yellow

C. Black

D. Red