Chemistry MCQs

Page No. 41

Which of the following is a symmetrical ketone___________________?


a3 – hexanone


bacetone


cbutanone


d2-pentanone


View Answer acetone

Which one exhibits aldol condensation____________________?


aHCHO


bC6H5CHO


cCl3CCHO


dCH3COCH3


View Answer CH3COCH3

Acetaldehyele cyanohydrin on acid hydrolysis yields___________________?


aTartaric acid


bPropionic acid


cLactic acid


dValeric acid


View Answer Lactic acid

Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?


aPdCl2


bCu2Cl2


cCuCl2


dPdCl2


View Answer CuCl2

Aldehyde and ketone have same general formula for homologous series_________________?


aCnH2nO2n


bCnH2n


cCnH2nO


dCnH2nO+1


View Answer CnH2nO

On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?


aPINK


bblack


cyellow


dbrick red


View Answer brick red

Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?


a60%


b50%


c52%


d8%


View Answer 52%

Formula of haloform is_________________?


aHCOX


bCX4


cCHX3


dCH3X


View Answer CHX3

Formaldehyde and lactose are combined to produce throat lozenges named as__________________?


aformamint


blactomint


caldomint


dformalactose


View Answer formamint

Which of the following do not give aldol condensation reactions ?


aformaldehyde


bacetaldehyde


cdiemthyl ketone


dpropionaldehyde


View Answer formaldehyde

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