Chemical Engineering MCQs

Page No. 517

Mercaptans are added to liquefied petroleum gas (LPG) to _____________________ ?


aReduce its cost

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bNarrow down its explosion limit

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cAssist in checking its leakage from cylinder

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dIncrease its calorific value

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Research octane number refers to the___________________?


aLow octane number motor fuels

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bHigh octane number motor fuels

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cHigh octane number aviation fuels

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dUnleaded motor fuels

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View Answer Unleaded motor fuels

Which of the following is used as a catalyst in fluidised bed catalytic cracking ?


aSilica-magnesia

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bSilica-alumina

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cBentonite clays

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dAll A., B. and C.

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View Answer All A., B. and C.

Aniline point is the _________________?


aCharacteristic property of diesel & lubricating oils

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bMeasure of aromatic content of oil

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cBoth A. and B.

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dNeither A. nor B.

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View Answer Both A. and B.

Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatization by liquid SO2 extraction (Edeleanu process), its smoke point may become _______________________ mm?


a5

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b10

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c25

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d100

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View Answer 25

Smoke point of a test sample of kerosene is found to be 15 mm. On removal of ________________ from it, the smoke point rises to 25 mm?


an-paraffins

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bOlefins

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cAromatics

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dNone of these

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View Answer Aromatics

The most commonly used feed stock for the reforming reactor is ___________________?


aHeavy fuel oil

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bResiduum

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cStraight run gasoline

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dCasing head gasoline

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View Answer Straight run gasoline

Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’ ?


a1

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b5

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c15

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d25

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View Answer 5

Octane number of gasoline is a measure of its__________________?


aResistance to knock

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bIgnition delay

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cIgnition temperature

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dSmoke point

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View Answer Resistance to knock

In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen_________________?


aEnhances the desulphurisation process

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bMinimises coke formation

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cBoth A. and B.

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dNeither A. nor B.

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View Answer Both A. and B.

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