Chemistry MCQs

Page No. 88

Rate of filtration can be increased by applying gentle suction______________?


aGooch crucible


bFilter paper


cSintered crucible


dAll of the above


View Answer Filter paper

In crystallization if the solvent is inflammable then direct heating is________________?


aneeded


bavoided


cdepends on temperature


dcrystallization does not involve heating


View Answer avoided

In solvent extraction ether is used to separate products of organic synthesis from________________?


aWater


biodine


chydrochloric acid


dgases


View Answer Water

The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?


aoxidizing agent


breducing agent


cdrying agent


dcolouring agent


View Answer drying agent

Without suction pump filtration is __________________?


aFastprocess


bSlow process


cRapid process


dAll are possible


View Answer Slow process

Direct conversion of solids into vapours is called ___________________?


aSolvent extraction


bsublimation


cCrystallization


dvaporization


View Answer sublimation

In CCI4 I2 shows________________?


aRed colour


bPurple colour


cBlue colour


dYellow colour


View Answer Purple colour

Crystallization does not involve_______________?


aheating


bsublimation


ccooling


dvaporization


View Answer sublimation

Animal charcoal adsorbs the coloured_________________?


aimpurities


bcrystals


csolvents


dBoth A and B


View Answer impurities

Ratio of the amount of solute in organic and aqueous solvent is________________?


aRetardation factor


bDistribution co-efficient


cDistribution in aqueous solution


dAll statements are wrong



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