Coordination Compounds Practice Questions - DPP for JEE

 Page 1


PART-I (Single Correct MCQs)
1. Which of the following is incorrect regarding spectro-chemical series?
(a) NH
3
 > H
2
O
(b)
(c) NCS
–
 > SCN
–
(d) en > EDTA
2. C
63
H
88
CoN
14
O
14
P is the formulae of the Cyanocobalamine, (vitamin
B
12
) it contain CN
–
 and CN
–
 is very poisonous, than why this compound
does not prove to be fatal for us? (it inhibit the electron transport chain?
(a) CN
–
 forms covalent bond
(b) CN
–
 is coordinating to the cobalt as the ligand
(c) CN
–
 hydrolysis immediately
(d) All of these
3. Nickel (Z = 28) combines with a uninegative monodentate ligand X
–
 to
Page 2


PART-I (Single Correct MCQs)
1. Which of the following is incorrect regarding spectro-chemical series?
(a) NH
3
 > H
2
O
(b)
(c) NCS
–
 > SCN
–
(d) en > EDTA
2. C
63
H
88
CoN
14
O
14
P is the formulae of the Cyanocobalamine, (vitamin
B
12
) it contain CN
–
 and CN
–
 is very poisonous, than why this compound
does not prove to be fatal for us? (it inhibit the electron transport chain?
(a) CN
–
 forms covalent bond
(b) CN
–
 is coordinating to the cobalt as the ligand
(c) CN
–
 hydrolysis immediately
(d) All of these
3. Nickel (Z = 28) combines with a uninegative monodentate ligand X
–
 to
form a paramagnetic complex [NiX
4
]
2–
. The number of unpaired
electron(s) in the nickel and geometry of this complex ion are,
respectively :
(a) one, square planar
(b) two, square planar
(c) one, tetrahedral
(d) two, tetrahedral
4. The crystal field splitting energy for octahedral (?
0
) and tetrahedral (?
t
)
complexes is related as
(a)
(b)
(c)
(d)
5. Which of the following are inner orbital complex (i.e., involving d
2
sp
3
hybridisation) and is paramagnetic in nature?
(a) [Mn(CN)
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
(b) [MnCl
6
]
3–
, [FeF
6
]
3–
, [CoF
6
]
3–
(c) [Mn(CN)
6
]
3–
, [Fe(CN)
6
]
3–
(d) [MnCl
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
6. Which of the following is organo-metallic compound ?
(a) Ti(C
2
H
4
)
4
(b) Ti(OC
2
H
5
)
4
(c) Ti(OCOCH
3
)
4
(d) Ti(OC
6
H
5
)
4
Page 3


PART-I (Single Correct MCQs)
1. Which of the following is incorrect regarding spectro-chemical series?
(a) NH
3
 > H
2
O
(b)
(c) NCS
–
 > SCN
–
(d) en > EDTA
2. C
63
H
88
CoN
14
O
14
P is the formulae of the Cyanocobalamine, (vitamin
B
12
) it contain CN
–
 and CN
–
 is very poisonous, than why this compound
does not prove to be fatal for us? (it inhibit the electron transport chain?
(a) CN
–
 forms covalent bond
(b) CN
–
 is coordinating to the cobalt as the ligand
(c) CN
–
 hydrolysis immediately
(d) All of these
3. Nickel (Z = 28) combines with a uninegative monodentate ligand X
–
 to
form a paramagnetic complex [NiX
4
]
2–
. The number of unpaired
electron(s) in the nickel and geometry of this complex ion are,
respectively :
(a) one, square planar
(b) two, square planar
(c) one, tetrahedral
(d) two, tetrahedral
4. The crystal field splitting energy for octahedral (?
0
) and tetrahedral (?
t
)
complexes is related as
(a)
(b)
(c)
(d)
5. Which of the following are inner orbital complex (i.e., involving d
2
sp
3
hybridisation) and is paramagnetic in nature?
(a) [Mn(CN)
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
(b) [MnCl
6
]
3–
, [FeF
6
]
3–
, [CoF
6
]
3–
(c) [Mn(CN)
6
]
3–
, [Fe(CN)
6
]
3–
(d) [MnCl
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
6. Which of the following is organo-metallic compound ?
(a) Ti(C
2
H
4
)
4
(b) Ti(OC
2
H
5
)
4
(c) Ti(OCOCH
3
)
4
(d) Ti(OC
6
H
5
)
4
7. Which is not p - bonded complex ?
(a) Zeise’s salt
(b) Ferrocene
(c) Dibenzene chromiun
(d) Tetraethyl lead
8. A solution containing 2.675 g of CoCl
3
. 6 NH
3
 (molar mass = 267.5 g
mol
–1
) is passed through a cation exchanger. The chloride ions obtained
in solution were treated with excess of AgNO
3
 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)
(b)
(c)
(d)
9. The type of isomerism present in Pentaminenitrochromium (III)
chloride is
(a) optical
(b) linkage
(c) ionisation
(d) polymerisation.
10. Red precipitate is obtained when ethanol solution of dimethylglyoxime
is added to ammoniacal Ni(II). Which of the following statements is not
true ?  
(a) Red complex has a square planar geometry.
(b) Complex has symmetrical H-bonding
Page 4


PART-I (Single Correct MCQs)
1. Which of the following is incorrect regarding spectro-chemical series?
(a) NH
3
 > H
2
O
(b)
(c) NCS
–
 > SCN
–
(d) en > EDTA
2. C
63
H
88
CoN
14
O
14
P is the formulae of the Cyanocobalamine, (vitamin
B
12
) it contain CN
–
 and CN
–
 is very poisonous, than why this compound
does not prove to be fatal for us? (it inhibit the electron transport chain?
(a) CN
–
 forms covalent bond
(b) CN
–
 is coordinating to the cobalt as the ligand
(c) CN
–
 hydrolysis immediately
(d) All of these
3. Nickel (Z = 28) combines with a uninegative monodentate ligand X
–
 to
form a paramagnetic complex [NiX
4
]
2–
. The number of unpaired
electron(s) in the nickel and geometry of this complex ion are,
respectively :
(a) one, square planar
(b) two, square planar
(c) one, tetrahedral
(d) two, tetrahedral
4. The crystal field splitting energy for octahedral (?
0
) and tetrahedral (?
t
)
complexes is related as
(a)
(b)
(c)
(d)
5. Which of the following are inner orbital complex (i.e., involving d
2
sp
3
hybridisation) and is paramagnetic in nature?
(a) [Mn(CN)
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
(b) [MnCl
6
]
3–
, [FeF
6
]
3–
, [CoF
6
]
3–
(c) [Mn(CN)
6
]
3–
, [Fe(CN)
6
]
3–
(d) [MnCl
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
6. Which of the following is organo-metallic compound ?
(a) Ti(C
2
H
4
)
4
(b) Ti(OC
2
H
5
)
4
(c) Ti(OCOCH
3
)
4
(d) Ti(OC
6
H
5
)
4
7. Which is not p - bonded complex ?
(a) Zeise’s salt
(b) Ferrocene
(c) Dibenzene chromiun
(d) Tetraethyl lead
8. A solution containing 2.675 g of CoCl
3
. 6 NH
3
 (molar mass = 267.5 g
mol
–1
) is passed through a cation exchanger. The chloride ions obtained
in solution were treated with excess of AgNO
3
 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)
(b)
(c)
(d)
9. The type of isomerism present in Pentaminenitrochromium (III)
chloride is
(a) optical
(b) linkage
(c) ionisation
(d) polymerisation.
10. Red precipitate is obtained when ethanol solution of dimethylglyoxime
is added to ammoniacal Ni(II). Which of the following statements is not
true ?  
(a) Red complex has a square planar geometry.
(b) Complex has symmetrical H-bonding
(c) Red complex has a tetrahedral geometry.
(d) Dimethylglyoxime functions as bidentate ligand.
11. Which one of the following has largest number of isomers
?
(a)
(b)
(c)
(d)
12. In Fe(CO)
5
, the Fe – C bond possesses         
(a) ionic character
(b) s-character only
(c) p-character
(d) both s and p characters
13. The structure of which of the following chloro species can be explained
on the basis of dsp
2 
hybridization ?
(a)
(b)
(c)
(d)
14. The octahedral complex of a metal ion M
3+
 with four monodentate
ligands L
1
, L
2
, L
3
 and L
4
 absorb wavelengths in the region of red, green,
yellow and blue, respectively. The increasing order of ligand strength of
Page 5


PART-I (Single Correct MCQs)
1. Which of the following is incorrect regarding spectro-chemical series?
(a) NH
3
 > H
2
O
(b)
(c) NCS
–
 > SCN
–
(d) en > EDTA
2. C
63
H
88
CoN
14
O
14
P is the formulae of the Cyanocobalamine, (vitamin
B
12
) it contain CN
–
 and CN
–
 is very poisonous, than why this compound
does not prove to be fatal for us? (it inhibit the electron transport chain?
(a) CN
–
 forms covalent bond
(b) CN
–
 is coordinating to the cobalt as the ligand
(c) CN
–
 hydrolysis immediately
(d) All of these
3. Nickel (Z = 28) combines with a uninegative monodentate ligand X
–
 to
form a paramagnetic complex [NiX
4
]
2–
. The number of unpaired
electron(s) in the nickel and geometry of this complex ion are,
respectively :
(a) one, square planar
(b) two, square planar
(c) one, tetrahedral
(d) two, tetrahedral
4. The crystal field splitting energy for octahedral (?
0
) and tetrahedral (?
t
)
complexes is related as
(a)
(b)
(c)
(d)
5. Which of the following are inner orbital complex (i.e., involving d
2
sp
3
hybridisation) and is paramagnetic in nature?
(a) [Mn(CN)
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
(b) [MnCl
6
]
3–
, [FeF
6
]
3–
, [CoF
6
]
3–
(c) [Mn(CN)
6
]
3–
, [Fe(CN)
6
]
3–
(d) [MnCl
6
]
3–
 , [Fe(CN)
6
]
3–
, [Co(C
2
O
4
)
3
]
3–
6. Which of the following is organo-metallic compound ?
(a) Ti(C
2
H
4
)
4
(b) Ti(OC
2
H
5
)
4
(c) Ti(OCOCH
3
)
4
(d) Ti(OC
6
H
5
)
4
7. Which is not p - bonded complex ?
(a) Zeise’s salt
(b) Ferrocene
(c) Dibenzene chromiun
(d) Tetraethyl lead
8. A solution containing 2.675 g of CoCl
3
. 6 NH
3
 (molar mass = 267.5 g
mol
–1
) is passed through a cation exchanger. The chloride ions obtained
in solution were treated with excess of AgNO
3
 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)
(b)
(c)
(d)
9. The type of isomerism present in Pentaminenitrochromium (III)
chloride is
(a) optical
(b) linkage
(c) ionisation
(d) polymerisation.
10. Red precipitate is obtained when ethanol solution of dimethylglyoxime
is added to ammoniacal Ni(II). Which of the following statements is not
true ?  
(a) Red complex has a square planar geometry.
(b) Complex has symmetrical H-bonding
(c) Red complex has a tetrahedral geometry.
(d) Dimethylglyoxime functions as bidentate ligand.
11. Which one of the following has largest number of isomers
?
(a)
(b)
(c)
(d)
12. In Fe(CO)
5
, the Fe – C bond possesses         
(a) ionic character
(b) s-character only
(c) p-character
(d) both s and p characters
13. The structure of which of the following chloro species can be explained
on the basis of dsp
2 
hybridization ?
(a)
(b)
(c)
(d)
14. The octahedral complex of a metal ion M
3+
 with four monodentate
ligands L
1
, L
2
, L
3
 and L
4
 absorb wavelengths in the region of red, green,
yellow and blue, respectively. The increasing order of ligand strength of
the four ligands is:
(a)
(b)
(c)
(d)
15. Which one of the following coordination compounds is used to inhibit
the growth of tumours?
(a) Trans-platin
(b) EDTA complex of calcium
(c) [(Ph
3
P)
3
RhCl]
(d) Cis-platin
16. [NiCl
2 
{P(C
2
H
5
)
2
(C
6
H
5
)}
2
] exhibits temperature dependent magnetic
behaviour (paramagnetic/diamagnetic). The coordination geometries of
Ni
2+
 in the paramagnetic and diamagnetic states are respectively
(a) tetrahedral and tetrahedral
(b) square planar and square planar
(c) tetrahedral and square planar
(d) square planar and tetrahedral
17. Which will give a white precipitate with AgNO
3
 in aqueous solution
(a) (b)
(c)
(d)
18. Which of the following name formula combinations is not correct?