Chemical Engineering MCQs

Page No. 708

Which oil is preferred for paint manufacture ?


aDrying oil

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bNon-drying oil

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cSemi-drying oil

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dSaturated oil

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View Answer Drying oil

Thorium is mainly used _______________?


aFor the manufacture of gas mantles

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bAs a fissile fuel in a nuclear reactor

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cIn the manufacture of hydrogen bomb

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dIn the treatment of cancer

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Drinking (potable) water treatment does not involve __________________?


aCoagulation

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bSedimentation

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cSoftening

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dDisinfection

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View Answer Softening

Removal of dirt/soil by soaps or detergent does not involve the _______________ of soil ?


aEmulsification

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bDispersion

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cPrecipitation

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dWetting

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View Answer Precipitation

The basic difference between vegetable oils and fats is in their ___________________?


aDensity

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bChemical properties

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cPhysical state

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dComposition

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View Answer Physical state

Starting raw material for the manufacture of Maleic anhydride is___________________?


an-butene

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bBenzene

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cEither A. or B.

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dNeither A. nor B.

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View Answer Either A. or B.

‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of ____________________?


aN2 & H2

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bCO2 & H2

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cCO & H2

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dC & H2

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View Answer CO & H2

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?


a75

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b< 10

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c> 30

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d50

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View Answer < 10

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an___________________?


aSurfactant

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bBuilder

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cOptical brightening agent

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dAnti soil redeposition agent

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Lindane is____________________?


aNot a fumigant

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bBHC (Benzene Hexachloride) containing 99% γ-isomer

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cA by-product of BHC manufacture

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dBoth B. and C.

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