Chemistry MCQs

Page No. 108

The mass of one mole of electron is________________?


a1.008


b0.55


c0.184


d1.637


View Answer 0.55

For industrial preparation of CH3CHO catalytic promoter is_________________? 0


aPdCl2


bCu2Cl2


cCuCl2


dPbCl2


View Answer Cu2Cl2

Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?


an. butane


bEthanol


cEthane


dDiethyl ether


View Answer Ethane

When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________?


aCarboxylic acid


bEthanoic acid


cPropanoic acid


dButanoic acid


View Answer Propanoic acid

Which one of the following will be sulphonated readily ?


aChlorobenzene


bToluene


cNitrobenzene


dBenzene


View Answer Toluene

When benzene is heated in air with V2O5 at 450°C yields_________________?


aPhenol


bMaleic anhydride


cGlyoxal


dBenzoic acid


View Answer Maleic anhydride

In 1 – pentene -4- yne the carbon exhibit hybridization_________________?


asp3 – sp2


bsp2 – sp


csp2 – sp


dsp3 – sp2 – sp


View Answer sp3 – sp2 – sp

Which one of the following looks odd__________________?


aH2SO4


bKMnO4


cH2S


dK2CrO4


View Answer H2S

The most paramagnetic element is____________________?


aIron


bCobalt


cChromium


dManganese


View Answer Iron

Which molecule has the highest bond energy among the halogens_________________?


aFluorine


bChlorine


cIodine


dBromine


View Answer Chlorine

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