Chemistry MCQs

Page No. 64

Pure metal__________________?


acorrode slowly


bcorrode rapidly


cdoes not corrode easily


dNone of these



The melting points and boiling points upto meddle of 3d- series ____________________?


aincreases


bDecreases


cRemain same


dno regular trend


View Answer increases

The leements in which d or f orbitals are in the process of completion are__________________?


aouter transition elements


binner transition elements


ctypical transition elements


dtransition elements


View Answer transition elements

Group VIB of transition elements contains___________________?


aZn Cd Hg


bFe Ru Os


cCr Mo W


dMn Te Re


View Answer Cr Mo W

The oxidation number of central metal atom in [Ni(CO)4] is_________________?


a0


b2


c4


d6


View Answer 4

Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?


a2


b6


c4


d8


View Answer 6

The reduction potential Zn is_________________?


a0.76


b-0.76


c-0.55


d0.55


View Answer -0.76

In K2Cr2O7 the oxidation number of chromium is____________________?


a7


b6


c-7


d-6


View Answer 6

Apparent charge on atom in molecule is___________________?


avalency


bcoordination number


coxidation number


dcharge number


View Answer oxidation number

In alkaline battery the anode is made up of______________________?


aMnO2


bZn


cAgO2


dcadmium


View Answer Zn

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