chemical engineering MCQs – Page 165

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 Review each marked answer and report any item that may be outdated or unclear.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
3281. The average boiling point of aviation turbine fuel is closest to that of__________________?
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A. Kerosene

B. Lubricating oils

C. Diesel

D. LPG

3282. High pressure fluid in a shell and tube heat exchanger should preferably be routed through the________________?
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A. Shell side, if the flow is counter-current and tube side if the flow is co-current

B. Shell side for large overall heat transfer co-efficient

C. Shell side for smaller total pressure drop

D. Tubes to avoid the expansion of high pressure shell construction
3283. Name the hydrocarbon having the poorest oxidation stability ?
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A. Aromatics

B. Naphthene

C. Olefin

D. Paraffin

3284. Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is ________________?
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A. More than 100

B. Less than 25

C. Round about 100

D. Between 50 and 100

3285. Casing head gasoline is the liquid __________________?
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A. Natural gas

B. Butane

C. Propane

D. Gasoline separated from wet natural gas by compression

3286. ______________ converts n-paraffins to i-paraffins ?
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A. Isomerisation

B. None of these

C. Polymerisation

D. Alkylation

3287. _____________ determination is not a very significant and important test for gasoline?
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A. Gum & sulphur content

B. Viscosity

C. Octane number

D. Reid vapor pressure

3288. Paraffins are desirable in lubricating oil, as it has got high_____________________?
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A. Pour point

B. Viscosity index

C. Smoke point

D. Viscosity

3289. Which of the following gasoline (unleaded) has the least octane number ?
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A. Straight run gasoline

B. Catalytically reformed gasoline

C. Catalytically cracked gasoline

D. Polymer gasoline

3290. LSHS is a type of furnace oil, which_____________________?
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A. Is more viscous than high viscosity furnace oil (HVFO)

B. Is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%)

C. All A., B. and C.

D. Stands for low sulphur heavy stock

3291. Which one is preferred for aircraft engine ?
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A. High freezing point aviation fuel

B. Low viscosity index lube oil

C. None of these

D. High viscosity index lube oil
3292. Water content in the crude oil as it comes out of oil well may be upto ______________ percent?
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A. 25

B. 5

C. 10

D. 2

3293. Petroleum coke is used mainly in the __________________ ?
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A. Manufacture of carbon electrode

B. Discoloration of yellow glycerine

C. Sugar refining

D. Blast furnace for reduction of iron ore

3294. Flash point of an oil is determined by the _____________________?
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A. Pensky Martens apparatus

B. Conradson apparatus

C. Ramsbottom apparatus

D. Saybolt viscometer

3295. Octane numbers of motor gasoline used in India and America are respectively________________?
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A. 94 & 100

B. 94 & 87

C. 83 & 100

D. 87 & 94
3296. The solvent used in Barisol dewaxing process is_____________________?
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A. Benzol and ethylene dichloride

B. Hexane

C. Furfural

D. Methyl ethyl ketone (MEK)

3297. Which of the following is used as a catalyst in fluidised bed catalytic cracking ?
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A. All A., B. and C.

B. Bentonite clays

C. Silica-alumina

D. Silica-magnesia

3298. Aniline point of the diesel is a measure of its ______________ content?
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A. Paraffin

B. Aromatic

C. Olefin

D. Naphthene

3299. Which of the following has the lowest flash point of all ?
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A. Diesel

B. Furnace oil

C. Kerosene

D. Petrol
3300. Solvent used in Edeleanu process is__________________?
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A. Propane

B. Furfural

C. Liquid SO2

D. Phenol