Chemistry MCQs

Page No. 87

Sintered glass is a porous material used for ___________________?


aabsorption


badsorption


cfiltration


dsublimation


View Answer Filtration

The solvent or mixture of solvents used for separation of compounds is called____________________?


aStationary phase


bMobile phase


cDynamic phase


dStatic phase


View Answer Mobile phase

Silica gel and alumina are used as __________________?


aMobile phase


bStationary phase


cMixed phase


dSingle phase


View Answer Stationary phase

Safe and the most reliable method of drying crystals is through_________________?


afilter paper


bVacuum desiccators


cOven


dNone of these


View Answer Vacuum desiccators

A process controlled by Distributive law is__________________?


acrystallization


bSublimation


cSolvent extraction


dfiltration


View Answer Solvent extraction

Different components of a mixture have different Rf values due to________________?


aPolar solvent used


bCombination of solvents used


cTheir different distribution coefficients in the solvent


dDistributive law



Identification of the components of a sample is_________________?


aQuantitative analysis


bQualitative analysis


cStoichiometry


dPhysical chemistry


View Answer Qualitative analysis

The technique used to separate components of mixture in solid phase ?


acrystallization


bfiltration


cSublimation


dSolvent extraction


View Answer Sublimation

The tip of funnel should touch the wall of the breaker in order to avoid____________________?


aInconsistent flow of filtration


bsplashing


cpremature crystallization


dall of the above


View Answer splashing

Size of filter paper is selected according to the amount of__________________?


asolution


bamount of insoluble solute


camount of soluble solute


dAmount of solvent



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