chemical engineering MCQs – Page 167

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 Review each marked answer and report any item that may be outdated or unclear.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

3321. Specific gravity of a petroleum product gives an indication of its _________________?
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A. Hydrocarbon content type (aromatic or paraffinic)

B. Ease of atomisation

C. Sulphur content

D. Degree of refinement

3322. Quinoline is a/an ________________ compound ?
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A. Nitrogen

B. Oxygen

C. Sulphur

D. None of these

3323. Lane and Garton classification of petroleum is based on its ____________________?
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A. Optical properties

B. Composition

C. Specific gravity

D. Viscosity

3324. Complete removal of _____________ from gasoline is done by Unisol process using caustic soda and methyl alcohol?
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A. Asphalt

B. Diolefins

C. Mercaptans

D. Waxes

3325. Naphtha yield in straight run distillation of crude oil may be about _______________ percent?
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A. 12

B. 2

C. 6

D. 18

3326. Which of the following is used as a solvent in deasphalting of petroleum products ?
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A. Methyl ethyl ketone

B. Furfural

C. Propane

D. Liquid sulphur dioxide

3327. In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
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A. Small downcomer liquid seal

B. Lower skirt clearance

C. Liquid gradient on the tray

D. Lower static submergence

3328. Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ______________ kcal/kg?
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A. 1000-1500

B. 2000-2500

C. 250-350

D. 600-750

3329. Isomerisation converts the ___________________ tot-paraffins?
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A. None of these

B. Olefins

C. Paraffins

D. Naphthenes

3330. The catalytic cracking of heavier petroleum fraction is done to produce mainly____________________?
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A. Asphalt

B. Diesel oil

C. Tar

D. Gasoline

3331. Stabilisation of gasoline (petrol) means ___________________?
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A. Increasing its oxidation stability

B. Increasing its vapour pressure

C. Improving its lead susceptibility

D. Removal of dissolved gases from it

3332. ___________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids?
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A. None of these

B. Packed

C. Sieve plate

D. Bubble cap plate

3333. A petroleum well is called dry, if it contains ____________________?
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A. All A., B. and C.

B. Only natural gas

C. No natural gas

D. Very little oil

3334. Olefins are_________________?
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A. None of these

B. Saturated hydrocarbons

C. Present in substantially good quantity in crude petroleum

D. Unsaturated cyclic compounds (hydrocarbons)

3335. Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?
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A. Aromatics

B. Paraffins

C. Naphthenes

D. Iso-paraffins

3336. Flash point of motor gasoline may be around ______________ C?
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A. 150

B. 45

C. 100

D. 10

3337. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is________________?
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A. Intermediate

B. Paraffinic

C. None of these

D. Naphthenic

3338. Furfural solvent extraction is used for upgrading (by dissolving aromatics) ?
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A. Cracking feedstock

B. Naphtha

C. Lubricating oils

D. Wax

3339. Pour point and freezing point is equal for__________________?
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A. Water

B. Petrol

C. Crude petroleum

D. Diesel

3340. Pick out the correct statement about catalytic polymerisation ?
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A. H2SO4 polymerisation process gives gasoline rich in unsaturates

B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho

C. O4 formation, which are inactive</strong>

D. Both A. and B.

E. Neither A. nor B.

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