Chemical Engineering MCQs

Page No. 704

______________ are added in lacquers to remove film brittleness and to improve adhereness?


aFilm forming materials

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bFilm forming materials

✓


cDiluents

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dSolvents

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10% oleum comprises of 10% free_________________?


aSO2

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bH2SO3

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cSO3

✓


dH2SO4

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View Answer SO3

The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is _____________________?


aAlumina

✓


bSilica gel

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cPlatinum

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dNickel

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View Answer Alumina

Catalyst used in the hydrogenation of oil is_________________?


aNickel

✓


bPlatinum

✖


cIron

✖


dAlumina

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View Answer Nickel

The function of gypsum addition during cement making is to_________________?


aIncrease the density of cement

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bDecrease the cement setting rate

✓


cBoth A. and B.

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dNeither A. nor B.

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Main use of hydrazine is___________________?


aAs a rocket fuel

✓


bIn water treatment

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cAs a disinfectant

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dAs fire retardant

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View Answer As a rocket fuel

Dehydrogenation of ethyl benzene produces __________________ ?


aStyrene

✓


bNaphthalene

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cPhenol

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dBenzoic acid

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View Answer Styrene

In primitive days, _____________ was being manufactured by Leblanc Process ?


aAlum

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bWashing soda

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cSoda ash

✓


dCalcium carbide

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View Answer Soda ash

Good quality of edible salt is obtained from brine by the process of__________________?


aSolar evaporation

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bVacuum evaporation

✓


cFreeze drying

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dElectrolysis

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View Answer Vacuum evaporation

______________ is produced by the dehydrogenation of ethyl benzene ?


aStyrene

✓


bEthyl alcohol

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cCumene

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dPhenol

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View Answer Styrene

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