This document contains a 30 question multiple choice quiz on inorganic chemistry topics including crystal field theory, coordination complexes, organometallic chemistry, and acid-base chemistry in non-aqueous solvents. The questions cover topics such as ligand properties, d-orbital splitting, reaction mechanisms, electronic configurations, and biological roles of metal ions. An answer key is provided at the end with the correct response for each question lettered a-d.

1. M. Sc. Part – I (Semester – I)
CH 201: Inorganic Chemistry – 1.1
Time: 1 hour MARKS :50
Instruction :
1. Answer in one sentence ( Two mark for each question )
2. Choose the correct alternatives from following and Tick mark √
the correct answer
======================================================
1.CFTgives total emphasis on -------------bonding
a.covalent bonding
b. Ionic bonding
c. Hydrogen bonding
d. Metallic bonding
2.CFT was proposed by ----
a. H,Bethe and j.van vleck
b. H,Bethe and lewis
c.Both a and b
3. Crystal Field Theory) Strong field ligands such as CN-
:
a) usually produce high spin complexes and small crystal field splittings.
b) usually produce low spin complexes and small crystal field splittings.
c) usually produce low spin complexes and high crystal field splittings.
d) usually produce high spin complexes and high crystal field splittings.
4.. (Crystal Field Theory) How many unpaired electrons are there in a strong
field iron(II) octahedral complex?
a) 0
b) 1
c) 2
d) 4

2. 5.. (Crystal Field Theory) When the valence d orbitals of the central metal ion
are split in energy in an octahedral ligand field, which orbitals are
raised lower in energy?
a) dxy and dx2-y2
b) dxy, dxz and dyz
c) dxz and dyz
d) dx2-y2 and dz2
6. (Crystal Field Theory) When the valence d orbitals of the central metal ion
are split in energy in an octahedral ligand field, which orbitals are
raised higher in energy?
a) dxy and dx2-y2
b) dxy, dxz and dyz
c) dxz and dyz
d) dx2-y2 and dz2
7.The complex ion, tetraamminenickel(II), is diamagnetic. What is its likely
geometry?
A) square-planar B) tetrahedral C) octahedral D) could be more than one of
these
7. What is the correct ordering (strongest field to weakest field) for the
following ligands?
(a) CN-
(b) OH-
(c) Br-
(d) NO2-
8. Given [Ni(H2O)6]2+
(high spin). Calculate ΔCFSE and give configuration in
term of t2g and eg.
a.2.6 Δ0, t2g
1
eg
b.1.2 Δ0, t2g
6
eg
2
c.1.2 Δt, t2g
6
eg
2

3. d.2.6 Δsp, t2g
5
eg
2
9. Why in octahedral complexes used term t2g and eg whereas tetrahedral used
term t2 and e?
a.Tetrahedral has centre of symmetry.
b.Octahedral does not have centre of symmetry
c.Octahedral has centre of symmetry.
d.all of these
10Given structure [Co(H2O)6]2+
. What type of orbital of this complex?
a.Inner octahedron orbital complex
b.Outer octahedron orbital complex
c. both a and b
d. none of these
11. Which of the following has square planar structure?
(a) [NiCl4]2-
(b) [Ni(CO)4]
(c) [Ni(CN)4]2-
(d) None of these
12. Which of the following shall form an octahedral complex?
(a) d4
(low spin)
(b) d8
(high spin)
(c) d6
(low spin)
(d) All of these
13. Which of the following correctly places the ligands in their order in the
spectrochemical series?
a.I–
< Cl–
< H2O < en
b. I–
< Cl–
< NH3 < H2O
c. I–
< Cl–
< en< H2O
d. All of these
14. Which statement is incorrect about typical metal carbonyl complexes
M(CO)n?
a.They are likely to obey the 18-electron rule
b.They contain π-acceptor ligands
c.M is in a zero oxidation state
d.They are likely to be paramagnetic

4. 15. The 'd-d' transitions in an octahedral [NiX6]2+
complex are:
a.Laporte alloed but spin allowed
b.Laporte forbidden but spin allowed
c.Laporte forbidden but spin forbidden
d. All of these
16. How many bridging carbonyl present in Mn2(CO)10?
a. 0
b. 2
c.3
d.1
17. State whether [Fe(CO)5] Obeys EAN rule or not?
a) Obeys b) Not Obeys c) other than two
18. CO is π acid ligand and it electrons of metal.
a. donate
b. Acceptor
c. Both a and b
d. none of these
19.How many bridging carbonyls are present in [Co2 (CO)8]
a. 0
b.1
c.2
d.3
20. State whether [Fe(CO)5] Obeys EAN rule or not?
a) Obeys b) Not Obeys c) other than two d. none of these

5. 21. In hydroformylation synthesis aldehyde formed from alkene has -------
number of carbon atoms
a) one more b) same c) two more d) none of above
22. State whether V(CO)6 follows 18 electron rule or not?
a) Obeys b) Not Obeys c) other than two d. none of these
23. What is shape of Fe (CO)5
a) Trigonal bipyramidal b) Square planar pyramidal
c) Square planar bipyramidal d) Octahedral
24. What is shape of Ni(CO)4
a) Trigonal pyramidal b) Tetrahedral
c) Square planar d) Octahedral
25. How many metal – metal bonds are present in the structure of Ir4(CO)12
a) One b) Two c) Three d) Four
26. How many metal – metal bonds are present in the structure of Fe2(CO)9
a) One b) Two c) Three d) Four
27. What is chemical name of Zeise’s salt?
a) potassium ethylene trichloro platinate(II)
b) sodium ethylene trichloro platinate(II)
c) potassium ethylene trichloro platinate(IV)
d.sodium ethylene trichloro platinate(IV)
28. CO is weak ligand ligand
a) weak b) strong c) both weak & strong d) none of these
29. State whether Cr(CO)6 follows 18 electron rule or not?
a) Obeys b) Not Obeys c) other than two

6. 30. determination of formation constants by -----------------methods.
a.pH – metry
b. spectrophotometry
c.Both a and b
d. none of these
Answer Key
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
b a c a b d a b c b c d a a b
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
a a b c a a b a b c c a c a c
M. Sc. Part – I (Semester – II)
CH 201: Inorganic Chemistry – 2.1
Time: 1 hour MARKS :50
Instruction :
1.Answer in one sentence ( Two mark for each question )
2. Choose the correct alternatives from following and Tick mark √ the correct answer
===============================================================
1.When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation
number of chlorine changes from
a.Zero to – 1 and zero to +3

7. b.Zero to + 1 and zero to –3
c. Zero to + 1
d. zero to –5
2.In which of the following compounds, nitrogen exhibits highest oxidation state?
a. N3H
b. NH2OH
c. N2H4
d. NH3
3.Three reactions involving H2PO4 are given below
(a) H3PO4 + H2O H3O+
+ H2PO4
(b) H2PO4 + H2O HPO4
2
+ H3O+
(c) H2PO4 + OH H3PO4 + O2
d.All of these
4.The correct order of increasing bond angles in the following species is
a.Cl2O < ClO2 < ClO2
-
b.ClO2
-
< Cl2O < ClO
c.Cl2O < ClO2
-
< ClO2
d. ClO2 < Cl2O < ClO2
-
5. Which noble gas is most abundant in atmosphere?
a. He
b. Ne
c. Ar.
d. . Kr
6.In which of the following arrangements, the sequence is not strictly according to the
property written against it?
a.CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing power
b. HF < HCl < HBr < HI : Increasing acid strength
c. NH3 < PH3 < AsH3 < SbH3 : Increasing basic strength
d. B < C < O < N : Increasing first ionization enthalpy

8. Among the following which is the strongest oxidizing agent? ]
7.One mole of magnesium nitride on the reaction with an excess of water gives:
a. F2
b. Cl2
c. Br2
d. I2
8.Types of Polymorphism
a. Enantitiotropic polymorph
b.Momotropic Polymorp
c. Both a and B
d. None of these
9. oxidation state is common for both lanthanides and actinides.
a. 4
b.3
c.2
d.6
10. electronic configuration Gadolinium is
a. 4f 9 5d1 6s2
b. 4f 7 5d1 6s2
c. 4f 8 5d1 6s1
d. 4f 8 5d0 6s2
11. There is a gradual decrease in the size of atoms or M3+ ions across the series due to
a. Lanthanide contraction
b. Lanthanide Relaxation
c. both a and b
d. None of these
12. The general electronic configuration of actinides is
a.[Rn] 5f0, 6d1, 7s2

9. b. [Rn] 5f0, 6d0, 7s2
c. .[Rn] 5f0, 6d0, 7s1
d.all of these
13. Extraction of lanthanide from monazite sand
a. dolomite
b. Bauxite
c. Monazite
d. all of these
14.maximum oxidation state is exhibited by
a.3
b.4
c.2
d. All of these
15. The basicity of lanthanides decreases with ------
a. Same principle quantum number
b. Lanthanide contraction
c. size decreases
d. all of these
16. dπ−pπ bonds present in
a.NH3
b.CO2
C.SO2
d.All of these
17. dπ−pπ bonds present in
a.NH3
b. SO3
C.H2O

10. d.All of these
18. dπ−pπ bonds present in
a.ClO4−
b. CO2
C.H2O
d.All of these
19. The number of dπ−pπ bonds present in SO2,SO3,ClO4− are
a. 1,2,3
b. 2,2,3
c. 3,2,3
d. 1,2,2
20. In chlorophyll -------- metal ion is present
a) Na
b) Ca
c) Mg
d) Cu
21. What are the biological role of sodium and potassium?
a) controlling osmotic pressure
b) charge transfer
c) membrane potential and condensation of polyelectrolytes
d) all thee
22. What is the functions of Haemoglobin
a) metal ion storage
b) transport of oxygen
c) storage of oxygen
d) all the three
23. What is the function of ‘myoglobin’.
a) metal ion storage
b) transport of oxygen
c) storage of oxygen
d) all the three
24. Role of Ferritin protein in biological process is --------.
a) metal ion storage
b) transport of oxygen
c) storage of oxygen
d) all the three
25.Ionic solutes dissolve easily in the solvent having -----------------
a. Low dielectric constant
b. High dielectric constant
c. covalent character
d. Low ionizing power
26. Protonic solvents are classified in to

11. a. Acidic
b. basic
c. amphoteric
d. all of these
27. aprotic solvents are classified as
a.autoionizing
b. Non polar
c.co-ordinating
d.all of these
28. ammonium nitrate is ------------in liquid ammonia
a.Acid
b.base
c.both a and b
d. none of these
29.In sulphur dioxide acid base reaction , thionyl acts as --------and sulphite acts as -------
a. acid and Base
b. base and acid
c. acid and salts
d. Base and salts
30. acetic acid acts a --------------- in ammonia
a. strong Acid
b.weak acid
c. Both a and b
c. none of these

12. Answer Key
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
b a b b c c a c b b a b b b d
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
c b a a c d b c a b d d a a a