chemical engineering chemical process MCQs – Page 12

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 Review each marked answer and report any item that may be outdated or unclear.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
221. Viscose rayon is chemically___________________?
comments icon0

A. Cellulose nitrate

B. Cellulose acetate

C. Regenerated cellulose acetate

D. Regenerated cellulose nitrate

222. Ore concentration by froth floatation utilises the ______________ of ore particles ?
comments icon0
A. Wetting characteristics

B. Terminal velocities

C. None of these

D. Density difference

223. Mannheim furnace is used in the manufacture of_________________?
comments icon0

A. Corundum

B. H2SO4 by Chamber process

C. Hydrochloric acid

D. Calcium carbide

224. Main product in calcium carbide-water reaction is___________________?
comments icon0

A. CaCO3

B. C2H2

C. Ca(OH)2

D. CO2

225. Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of_____________________?
comments icon0

A. Methyl alcohol

B. Formic acid

C. Hydrochloric acid

D. Nitric acid
226. Impurities present in brine is normally removed by treatment with ?
comments icon0

A. Lime and soda ash

B. All A , B. and C.

C. Lime, ammonia and carbon

D. NH3 and CO2

227. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ C ?
comments icon0

A. 90-100

B. < 0

C. 15-30

D. 250-300

228. DDT stands for___________________?
comments icon0

A. Diethyl-diphenyl-trichloromethane

B. diphenyl-dichloro-trichloromethane

C. Dichloro-diphenyl-trichloroethane

D. Dichloro-diphenyl-trichloromethane

229. Hydrogenation of oil takes place in a/an ____________________ reactor ?
comments icon0

A. Plug flow

B. Autothermal

C. None of these

D. Trickle bed
230. Fat splitting catalyst is__________________?
comments icon0

A. Fe

B. ZnO

C. CaCO3

D. Al2O3

231. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?
comments icon0

A. As a rust preventive

B. As a lubricant

C. In hard water for cleaning of cloth

D. As a foam depressant in distillation column

232. Nylon-6 is a__________________?
comments icon0
A. Polyamide

B. Polyester

C. None of these

D. Thermosetting resin

233. Wet chlorine gas produced during electrolysis of brine is dehydrated by__________________?
comments icon0

A. Passing it through a bed of diatomaceous earth

B. None of these

C. Passing it through a bed of silica gel

D. Spraying 66 Be H2SO4 counter current to the flow of the gas
234. The drug used in contraceptives is____________________?
comments icon0

A. Sulfadiazine

B. Methyl salicylate

C. Penicillin

D. Mestranol
235. Glycerine is a by-product of the ________________ industry ?
comments icon0

A. Oil hydrogenation

B. Paint

C. Detergent

D. Soap
236. The basic constituent of vegetable oils is ___________________?
comments icon0

A. Fatty alcohol

B. Mono esters

C. Triglyceride

D. Fatty acids

237. Raw materials used for producing ________________ cement does not contain iron oxide?
comments icon0

A. Waterproof

B. White

C. Slag

D. Pozzolan

238. Which of the following contains least amount of N2 ?
comments icon0
A. Coke oven gas

B. Water gas (blue gas)

C. Blast furnace gas

D. Producer gas

239. Pure rectified spirit contains about _________________ percent alcohol?
comments icon0

A. 45

B. 99.5

C. 70

D. 95
240. Presence of H2S in raw water (to be chlorinated) results in the_____________________?
comments icon0

A. None of these

B. Reduced softening capacity of zeolite

C. Easy removal of its hardness

D. Increased dosage of chlorine to provide a disinfecting residual in the water