Chemical Engineering MCQs

Page No. 537

Which of the following fractions of petroleum contains maximum sulphur ?


aDiesel

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bGasoline

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cNaphtha

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dAtmospheric residue

✓


View Answer Atmospheric residue

Good quality kerosene should have__________________?


aLow smoke point

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bHigh smoke point

✓


cHigh aromatics content

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dLow paraffins content

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View Answer High smoke point

Catalyst used in alkylation process is__________________?


aSulphuric acid

✓


bNickel

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cSilica gel

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dAlumina

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View Answer Sulphuric acid

Cracking is___________________?


aAn exothermic reaction

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bAn endothermic reaction

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cFavoured at very low temperature

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dNone of these

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Concentration of H2SO4 catalyst in alkylation is kept between 90-98%, because H2SO4 having concentration?


aLess than 90% promotes polymerisation

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bMore than 98% promotes cracking

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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.

The conductivity of crude oil-water mixture depends on the__________________?


apH value

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bWater percentage

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cTemperature

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dAll A., B. and C.

✓


View Answer All A., B. and C.

Octane number of n-heptane is assumed to be_________________?


a100

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b0

✓


c70

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d∞

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View Answer 0

Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?


aPCM

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bTar

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cLight diesel oil

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dLow viscosity furnace oil

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View Answer Light diesel oil

Catalyst used in isomerisation process is __________________ ?


aH2SO4

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bH3PO4

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cHF

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dAlCl3

✓


View Answer AlCl3

Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene?


a1

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b20

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c100

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d500

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View Answer 20

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