chemical engineering chemical process Mcqs
301. Which glass is usually used in optical work ?
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A. Fibre glass

B. Lead glass

C. Photo-sensitive glass

D. High silica (borosilicate) glass

302. Enamels______________________?
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A. Do not contain pigment

B. Are prepared from non-drying oil

C. Are same as varnish

D. Give good glossy finish
303. The terminology BTX used in coal tar distillation industry refers to___________________?
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A. Benzene-toluene-xylene

B. Benzene-toluol-xylol

C. Benzol-toluol-xylol

D. Benzol-toluene-xylene

306. Enzymes are_________________?
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A. Proteins with high molecular weight (around 10,000)

B. Catalyst for temperature sensitive reactions

C. Derived from living organisms

D. All A, B. and C.
308. Hydrazine is used in water treatment for the removal of___________________?
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A. Colloidal impurities

B. Dissolved oxygen

C. Chlorinous taste

D. Turbidity

310. Which of the following is not an antibiotic ?
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A. Tetracycline

B. Quinine

C. Penicillin

D. Streptomycin

311. Zeigler process__________________?
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A. Employs very high pressure

B. Produces high density polyethylene

C. Uses no catalyst

D. Produces low density polyethylene

312. Varnish does not contain____________________?
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A. Pigment

B. Anti-skimming agent

C. Dryer

D. Thinner

313. The main use of activated carbon in water treatment is to control ___________________?
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A. Bacterial growth

B. Turbidity

C. None of these

D. Taste and odour
314. Refractory bricks burnt at very high temperature have got______________?
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A. High spalling tendency

B. Greater resistance to corrosion by slags

C. None of these

D. Less resistance to corrosion by slags

317. Naphthalene is removed from coke oven gas by ________________________?
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A. Scrubbing with wash oil

B. Absorbing in ethanolamine

C. Adsorbing on palladium

D. Passing it through electrostatic precipitator

318. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?
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A. Avoid mechanical weakening of fibre

B. Remove lignin by way of crystallisation

C. None of these

D. Increase the cellulose content

319. Antibiotic____________________?
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A. Is an anaesthetic

B. Inhibits/destroys the growth of microorganisms

C. Is an antimalarial

D. Is used as a pain reliever

322. Stereospecific agents are exemplified by________________?
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A. Ziegler catalysts

B. Supported metal oxide catalysts

C. Radiation

D. All A , B. & C
323. Graphite is a/an________________________?
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A. Electrical insulator

B. Allotrope of carbon

C. Moderator used in nuclear reactor

D. Both B. and C.
326. Hydrophilic group of a soap or detergent solution is____________________?
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A. Soil loving

B. Water loving

C. Water hating

D. None of these

327. 99.5% purity oxygen is used in_____________________?
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A. All A, B, and C.

B. Hospitals for medicinal purposes

C. Gas masks and artificial breathing apparatus

D. Cutting and welding by oxy-acetylene flame

329. In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
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A. Sodium sulphite & sodium sulphide

B. None of these

C. Sodium sulphide & sodium carbonate

D. Sodium sulphite & sodium carbonate

331. Phosphoric acid is prepared from_____________________?
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A. None of these

B. Cryolite

C. Rock phosphate

D. Chalcopyrite

332. Rosin soap is added during paper manufacture to____________________?
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A. Improve opacity

B. None of these

C. Impart adhesive properties

D. Impart resistance to penetration by liquids
333. Zeolite is used in the ____________________ ?
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A. Glass manufacture

B. Water treatment

C. Hydrogenation of fatty oil as a catalyst

D. Development of exposed photographic plate

334. Calcination of gypsum produces__________________?
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A. Nitre cake

B. Plaster of Paris

C. Lime

D. Salt cake

335. Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?
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A. Brighten the faint images

B. Convert silver chloride to silver

C. Remove metallic silver

D. Remove unexposed silver halide
336. Massecuite is ___________________?
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A. None of these

B. Highly acidic in nature

C. Used for paper making

D. Used as a cattle feed

337. Thermal pyrolysis of ethylene dichloride produces___________________?
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A. Trichloroethylene

B. Ethanol amine

C. Vinyl chloride

D. Ethylene oxide

338. Catalytic oxidation of naphthalene produces_______________?
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A. Phthalic anhydride

B. Styrene

C. None of these

D. Phenol

339. Pick out the wrong statement?
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A. Dry process is used for the manufacture of cement, when the raw material is blast furnace slag

B. Portland cement is made employing wet process

C. None of these

D. Gypsum is added to Portland cement to lengthen its setting time

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

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

B. Alcohol

C. Water

D. Kerosene oil
349. Terylene is__________________?
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A. Same as Dacron

B. A polyester

C. Both A. & B.

D. Neither A. nor B.