Chemical Engineering MCQs

Page No. 730

Rosin soap is added during paper manufacture to____________________?


aImpart adhesive properties


bImprove opacity


cImpart resistance to penetration by liquids


dNone of these



Solvay process is used for the manufacture of____________________?


aCaustic soda


bSoda ash


cCaustic potash


dSoda lime


View Answer Soda ash

The purpose of tanning in leather industry is to____________________?


aStiffen the leather


bSmoothen the leather


cMake it flexible


dImpart water resistance


View Answer Stiffen the leather

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


a30


b50


c70


d90


View Answer 70

Glycerine is a by-product of the ________________ industry ?


aSoap


bDetergent


cOil hydrogenation


dPaint


View Answer Soap

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


aL.D. converter


bBlast furnace


cRotary kiln


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


cCalcium perchlorate


dnone of these


View Answer Slaked lime

Enamels______________________?


aGive good glossy finish


bAre same as varnish


cAre prepared from non-drying oil


dDo not contain pigment



Permanent hardness of water can be removed by_________________?


aAddition of soda ash to it


bTreating it with zeolites


cPassing it through sodium hexametaphosphate


dAll A , B, and C.


View Answer All A , B, and C.

CaCl(OCl) is the chemical formula of___________________?


aHypo


bBleaching powder


cPlaster of Paris


dAqua regia


View Answer Bleaching powder

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