chemical engineering Mcqs
3301. Phenols are added in gasoline to____________________?
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A. Act as an antioxidant

B. Increase its pour point

C. Improve the octane number

D. Reduce its viscosity

3302. Increase in the specific gravity of petroleum products indicates________________?
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A. Higher H/C ratio

B. Increase in thermal energy per unit weight

C. Increase in aromatic content

D. Decrease in paraffin content
3303. The most suitable solvent for deasphalting vacuum residue is_____________________?
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A. Propane

B. Methyl ethyl ketone

C. Methanol amine

D. Doctors solution

3305. Solution used in Doctors treatment for the removal of mercaptans is_________________?
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A. Potassium isobutyrate

B. Sodium hydroxide

C. Sodium plumbite

D. Cupric chloride

3306. Which of the following contains maximum sulphur ?
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A. Fuel oil

B. Kerosene

C. Petrol

D. Diesel

3307. High aniline point of diesel indicates that, it _____________________?
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A. Has a large ignition delay

B. Has a low diesel index

C. Is highly aromatic

D. Is highly paraffinic
3308. hich of the following is the most suitable feed for platforming process (reforming) ?
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A. Naphtha

B. Fuel oil

C. Atmospheric residue

D. Olefinic hydrocarbon
3309. The condensate obtained on compression of wet natural gas is termed as__________________?
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A. None of these

B. Liquid natural gas

C. Liquefied natural gasoline

D. Natural gasoline
3310. Illuminating characteristics of kerosene is expressed by its_____________?
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A. Luminosity number

B. Aniline point

C. Smoke point

D. Aromatic content

3312. Diesel index is defined as_________________?
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A. (API) (100)/Aniline Point, C

B. (API) (Aniline Point, C)/100

C. (API) (Aniline Point, F)/100

D. (API) (100)/Aniline Point, F

3313. Which is the most desirable component of a good quality kerosene ?
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A. Naphthenes

B. i-paraffins

C. Aromatics

D. n-paraffins
3314. Deoiling of wax is done by its _________________?
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A. Heating

B. Cooling

C. Solvent extraction

D. Both B. & C.
3316. Polymerisation__________________?
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A. Causes aromatics to combine with each other

B. Causes olefins to combine with each other

C. Produces i-octane from cracked gases containing i-butane and butene

D. Is aimed at producing lubricating oil

3317. Which of the following categories of gasoline has the highest lead susceptibility ?
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A. Straight run gasoline

B. Catalytical cracked gasoline

C. Platinum reformed gasoline

D. Polymer gasoline

3318. Aniline point is the temperature at which___________________?
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A. Equal weight of diesel & the aniline are completely miscible

B. Equal weight of aniline & the test sample are completely miscible

C. Equal volume of aniline & the test sample are completely miscible

D. Aniline vaporises

3319. Solvent used for dewaxing of petroleum products are____________________?
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A. Furfural

B. Methyl ethyl ketone (MEK)

C. Propane

D. Both B. & C.

3320. Crude oil is pumped by a _______________ pump?
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A. Screw

B. Centrifugal

C. Reciprocating

D. Gear

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

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

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

B. Olefins

C. Paraffins

D. Naphthenes

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
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)

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.

3341. The general formula of naphthenes is___________________?
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A. CnH2n-6 (where, n ? 6)

B. CnHn-4

C. Same as that for olefins i.e. CnH2n

D. CnH2n + 2

3342. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?
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A. Gives higher yield of petrol

B. Lower octane number of petrol

C. Higher sulphur content in the product

D. Higher gum forming material in petrol

3346. Crude petroleum oil is a _______________ fuel?
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A. Primary

B. Fossil

C. Both A. & B.

D. Secondary

3347. Maximum use of petroleum coke is in__________________?
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A. Adsorption refining operation

B. Carbon electrode manufacture

C. Iron ore reduction

D. Fuel gas manufacture

3348. The order of preference for feedstock to a catalytic reformer is _________________ ?
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A. Virgin naphtha coking naphtha catalytic naphtha

B. Virgin naphtha catalytic naphtha coking naphtha

C. Coking naphtha virgin naphtha catalytic naphtha

D. Catalytic naphtha coking naphtha virgin naphtha

3350. Octane number of gasoline is a measure of its__________________?
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A. Ignition delay

B. Smoke point

C. Ignition temperature

D. Resistance to knock