Chemical Engineering MCQs

Page No. 730

Rosin soap is added during paper manufacture to____________________?


aImpart adhesive properties

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bImprove opacity

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cImpart resistance to penetration by liquids

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dNone of these

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Solvay process is used for the manufacture of____________________?


aCaustic soda

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bSoda ash

✓


cCaustic potash

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dSoda lime

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View Answer Soda ash

The purpose of tanning in leather industry is to____________________?


aStiffen the leather

✓


bSmoothen the leather

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cMake it flexible

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dImpart water resistance

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View Answer Stiffen the leather

The amount of benzene present in pure Benzol is about _______________ percent ?


a30

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b50

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c70

✓


d90

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View Answer 70

Glycerine is a by-product of the ________________ industry ?


aSoap

✓


bDetergent

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cOil hydrogenation

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dPaint

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View Answer Soap

Refractory bricks having high thermal conductivity is desirable, when it is to be used in the _________________?


aL.D. converter

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bBlast furnace

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cRotary kiln

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dRecuperator

✓


View Answer Recuperator

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?


aSlaked lime

✓


bSoda lime

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cCalcium perchlorate

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dnone of these

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View Answer Slaked lime

Enamels______________________?


aGive good glossy finish

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bAre same as varnish

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cAre prepared from non-drying oil

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dDo not contain pigment

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Permanent hardness of water can be removed by_________________?


aAddition of soda ash to it

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bTreating it with zeolites

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cPassing it through sodium hexametaphosphate

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dAll A , B, and C.

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View Answer All A , B, and C.

CaCl(OCl) is the chemical formula of___________________?


aHypo

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bBleaching powder

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cPlaster of Paris

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dAqua regia

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View Answer Bleaching powder

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