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CO-ORDINATION CHEMISTRY QUIZ

Question 1
A magnetic moment of 1.73 BM will be shown by one among the following
A
[Cu(NH3)4]2+
B
[Ni(CN)4]2–
C
TiCl4
D
[CoCl6]4–
Question 2
An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be
A
0.001
B
0.002
C
0.003
D
0.01
Question 3
In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic? 
A
N2  N2+
B
O2  O2+
C
C2  C2+
D
NO  NO+
Question 4
A complex compound in which the oxidation number of a metal is zero is
A
K4 [Fe (CN)6]
B
K3 [Fe (CN)6]
C
[Ni (CO)4]
D
[Pl (NH3 )4]Cl2
Question 5
A ligand can also be regarded as
A
Lewis acid
B
Bronsted base
C
Lewis base
D
Bronsted acid
Question 6
A solution containing 2.675 g of CoCl3 · 6NH3 (molar mass = 267.5 g mol–1) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol–1). The formula of the complex is
(At. Mass of Ag = 108 u)
A
[Co(NH3)6]Cl3
B
[CoCl2(NH3)4]Cl
C
[CoCl3(NH3)3]
D
[CoCl(NH3)5]Cl2
Question 7
Among the following metal carbonyls, C—O bond order is lower in
A
[Mn(CO)6]+
B
[Fe(CO)5]
C
[Cr(CO)6]
D
[V(CO)6]
Question 8
Among the ligands NH3, en, CN and CO, the correct order of their increasing field strength, is
A
en < CH < NH3 < CO
B
CO < NH3 < en < CN
C
NH3 < en < CN < CO
D
CN < NH3 < CO < en
Question 9
Among the properties (A) reducing (B) oxidizing (C) complexing, the set of properties shown by CNion towards metal species is:
A
A, B
B
B, C
C
C, A
D
A, B, C

Question 10
An octahedral complex is formed when hybrid orbitals of the following type are involved
A
sp3
B
dsp2
C
d2sp3
D
sp2d2

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author

DESH DEEPAK A P S CHAUHAN

M.Sc. CHEMISTRY!

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