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FeSO4 solution mixed with (NH4)2SO4 solution in 1:1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion because:

1. The former is an example of a basic compound, while the latter is an amphoteric compound
2. The former is an example of an amphoteric compound, while the latter is a basic compound
3. The former is an example of a double salt, while the latter is a coordination compound
4. The former is an example of a coordination compound, while the latter is a double salt

Subtopic:  Introduction, Classification and Nomenclature |
 74%
Level 2: 60%+
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The oxidation number and coordination number of Co in [Co(H2O)(CN)(en)2]2+respectively are:    

1. 3, 6

2. 3, 2

3. 2, 2

4. 1, 3

Subtopic:  Introduction, Classification and Nomenclature |
 88%
Level 1: 80%+
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The two coordination complexes, [Fe(CN)6]4– and [Fe(H2O)6]2+ are of different colors in dilute solutions, due to:

1. Higher lattice energy value of [Fe(CN)6]4– as compared to [Fe(H2O)6]2+
2. Higher CFSE value of [Fe(CN)6]4– as compared to [Fe(H2O)6]2+
3. Lower CFSE value of [Fe(CN)6]4– as compared to [Fe(H2O)6]2+
4. Lower lattice energy value of [Fe(CN)6]4– as compared to [Fe(H2O)6]2+
Subtopic:  Introduction, Classification and Nomenclature |
 77%
Level 2: 60%+
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The correct splitting diagram of d orbitals in an octahedral crystal field is:

1. 2.
3. 4.  
None of the above
Subtopic:  VBT, CFT & their Limitations |
 88%
Level 1: 80%+
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Optical isomerism is exhibited by among the following is/are:

1. [Cr(Ox)3]3- 2. [PtCl2(en)2]2+
3. [Cr(NH3)2Cl2en]+ 4. All of the above
Subtopic:  Isomerism in Coordination Compounds |
 79%
Level 2: 60%+
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How many optical isomers of [Pt(NH3)(Br)(Cl)(py)] can exist?

1. 3

2. 2

3. 1

4. 0

Subtopic:  Introduction, Classification and Nomenclature |
Level 3: 35%-60%
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The difference between a weak field ligand and a strong field ligand is:

1. Weak field ligands cause higher splitting in the d orbitals than strong field ligands.
2. Weak field ligands cause lower splitting in the d orbitals than strong field ligands.
3. Strong field ligands do not form a complex with a metal ion.
4. None of the above.

Subtopic:  VBT, CFT & their Limitations |
 69%
Level 2: 60%+
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The nature of bonding in metal carbonyls is -

1. The metal-carbon bonds in metal carbonyls have both σ and π characters.
2. The metal-carbon bonds in metal carbonyls have only σ character.
3. The metal-carbon bonds in metal carbonyls have only π character.
4. The metal-carbon bonds in metal carbonyls have only hydrogen bonding.
Subtopic:  Organometallic Complexes & their Uses |
 88%
Level 1: 80%+
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Match Column-I with Column-II and mark the correct option.

Column-I
(Ligand Name)		 Column-II
(Type of Ligand)
i. NO2- a. Hexadenate
ii. OH- b. Didentate
iii. C2O42- c. Monodentate
iv. EDTA d. Ambidentate


Codes:
1. i=d, ii=c, iii=b, iv=a

2. i=c, ii=d, iii=b, iv=a

3. i=c, ii=d, iii=a, iv=b

4. i=a, ii=c, iii=b, iv=d

Subtopic:  Ligands |
 89%
Level 1: 80%+
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The correct representation of tetrahydroxidozincate (II) is:
1. \([Zn(OH)_4]^{2-}\)
2. \([Zn(OH)_4]^{-}\)
3. \([Zn(OH)_4]^{3-}\)
4. \([Zn(OH)_4]\)

Subtopic:  Introduction, Classification and Nomenclature |
 92%
Level 1: 80%+
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