Chemistry MCQs

Page No. 40

Ammonia may be prepared by heating ammonium chloride with_______________?


aWater


bNaCl


cAqueous sodium hydroxide


dH2SO4



Downs cell is used to prepare_________________?


aSodium carbonate


bSodium bicarbonate


cSodium metal


dSodium hydroxide


View Answer Sodium metal

The element cesium bears resemblance with________________?


aCa


bCr


cBoth of the above


dNone of the above


View Answer None of the above

Which one of the following is not an alkali metal ?


aFrancium


bCaesium


cRubidium


dRadium


View Answer Radium

Carbonates of lithium are not stable like that of sodium due to________________?


aLow electronegativity


bLow electropositivity


cLow charge density


dNot known yet


View Answer Low electropositivity

Li is different from its family members due to____________________?


asmall size


bhigh charge density


cless electropositivity


dall of the above


View Answer all of the above

The oxides of beryllium BeO is_______________?


aAcidic


bBasic


cAmphoteric


dNeutral


View Answer Amphoteric

Formula of Chile saltpetre is__________________?


aNaNO3


bCaCO3


cBa (NO3)2


dNH4Cl


View Answer NaNO3

A elements are named as alkali metals because_______________?


aTheir oxide are basic


bTheir oxide and hydroxides are water soluble


cBoth A and B


dThey are found in earth


View Answer Both A and B

In base catalyzed reaction of carbonyl compound the catalyst___________________?


aincreases the nucleophilic character of reagent


bincreases electrophilic character of carbonyl compound


cacidic character of reagent


dBoth A and B



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