chemical engineering MCQs – Page 58

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 Review each marked answer and report any item that may be outdated or unclear.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
1141. The drug used in contraceptives is____________________?
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A. Mestranol

B. Sulfadiazine

C. Methyl salicylate

D. Penicillin

1142. Nickel is not used as a catalyst in the____________________?
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A. Fischer-Tropsch process

B. Shift conversion

C. Ostwalds process of HNO3 manufacture

D. Hydrogenation of oil

1143. Finely ground calcium aluminate & silicate is a/an ____________________?
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A. Cement

B. Abrasive

C. Cermet

D. Explosive

1144. The purpose of tanning in leather industry is to____________________?
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A. Make it flexible

B. Smoothen the leather

C. Stiffen the leather

D. Impart water resistance

1145. Fermentation is adversely affected by the____________________?
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A. High concentration

B. Presence of ammonium salts

C. Absence of air

D. Presence of air

1146. Polymethyl methacrylate (PMMA) is known as ____________________?
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A. Bakelite

B. Perspex

C. Nylon-6

D. Teflon

1147. Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?
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A. Its cryogenic separation from coke oven gas

B. Steam reforming of naphtha

C. Iron-steam reaction

D. Electrolysis of water

1148. Main constituents of cotton fiber is__________________?
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A. Cellulose

B. Starch

C. Gelatine

D. Lignin

1149. Salt is added in the kettle during soap manufacture to separate ___________________?
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A. Glycerine from lye

B. The metallic soap

C. The unsaponified fat from soap

D. Soap from lye
1150. Ore concentration by froth floatation utilises the ______________ of ore particles ?
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A. Wetting characteristics

B. Terminal velocities

C. None of these

D. Density difference

1151. Hydrogenation of oil does not ___________________?
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A. Remove double bonds

B. None of these

C. Raise its melting point

D. Improve its resistance to oxidation

1152. Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
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A. Coke and caustic soda

B. None of these

C. Coke and sand

D. Brine and coal
1153. In the Solvay process, the product from the calciner is___________________?
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A. Dense soda ash

B. Sodium bicarbonate

C. Light soda ash

D. Dehydrated soda ash

1154. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?
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A. Magnesium chloride

B. Sodium sulphate

C. Sodium chloride

D. Calcium sulphate

1155. Fusion of bauxite and ________________ produces high alumina cement?
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A. Coke

B. Quartz

C. Alum

D. Limestone
1156. Dacron is a ___________________?
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A. Thermosetting material

B. Condensation product of Hexamethylene diamine and adipic acid

C. None of these

D. Condensation product of dimethyl terephthalate and ethylene glycol

1157. Phenol formaldehyde is produced by condensation polymerisation. It is also known as_____________________?
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A. Bakelite

B. Nylon-66

C. Polyester

D. Teflon

1158. Chemical formula of salt cake is____________________?
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A. BaSO4

B. Na2SO4

C. CaSO4

D. MgSO4

1159. Kaolin is a/an _____________________?
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A. Refractory material

B. Synthetic resin

C. Artificial abrasive

D. Blue pigment

1160. Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?
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A. CaO

B. NaCl

C. NH3

D. Coke