Chemistry MCQs

Page No. 64

Pure metal__________________?


acorrode slowly

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bcorrode rapidly

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cdoes not corrode easily

✓


dNone of these

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


aincreases

✓


bDecreases

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cRemain same

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dno regular trend

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View Answer increases

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


aouter transition elements

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binner transition elements

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ctypical transition elements

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dtransition elements

✓


View Answer transition elements

Group VIB of transition elements contains___________________?


aZn Cd Hg

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bFe Ru Os

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cCr Mo W

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dMn Te Re

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View Answer Cr Mo W

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


a0

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b2

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c4

✓


d6

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View Answer 4

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


a2

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b6

✓


c4

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d8

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View Answer 6

The reduction potential Zn is_________________?


a0.76

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b-0.76

✓


c-0.55

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d0.55

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View Answer -0.76

In K2Cr2O7 the oxidation number of chromium is____________________?


a7

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b6

✓


c-7

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d-6

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View Answer 6

Apparent charge on atom in molecule is___________________?


avalency

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bcoordination number

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coxidation number

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dcharge number

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View Answer oxidation number

In alkaline battery the anode is made up of______________________?


aMnO2

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bZn

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cAgO2

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dcadmium

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View Answer Zn

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