Inorganic Chemistry Past Papers

[OBJECTIVE]

Subject: Chemistry-II (Inorganic Chemistry)

Time Allowed: 15 Minutes

Max Marks: 10

NOTE: Attempt this Paper on this Question Sheet only. Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.

 

Part-I Encircle the right answer, cutting and overwriting are not allowed. (10)

Which of the following shows trigonal geometry?

BF3 b. NH3

PCl3 d. IF3

2. In an octahedral structure, the pair of d orbitals involved in dsp? hybridization is

dx2y2, dz 2 b. dxz , dx2.y2

dz2, dxz d. dxy, dyz

3. According to LUX-FLOOD acid-base concept, base is a

OH-1 ion donor b. electron pair donor

oxide ion donor d. all of these

4. The structure of [Cu(H20)4]2+ is

Square planar b. Tetrahedral

Distorted octahedral d. Octahedral

5. The % age of U?235 in naturally occurring uranium is,

0.50% b. 0.71%

2.0% d. 5.0%

6. EAN of Cr (24) is

32 b. 36

86 d. 54

7. Which of the following anion has higher polarizability

F b. Cr

Br d. I

8. According to VSEPR theory, the geometry of Is;

Trigonal Planar b. Tetrahedral

Pyramidal d. Linear

Which of the following triads is an example of transition elements?

Ba, Sr, Ca b. Rb, Cs, Fr

Sc, Ti, V d. F, Cl, Br

The most common oxidation state of lanthanides is

+4 b. +3

+6 d. +2

 

[SUBJECTIVE]

Subject: Chemistry-II (Inorganic Chemistry)

Time Allowed: 2 Hours 45 Minutes

Max Marks: 50

NOTE: ATTEMPT THIS (SUBJECTIVE) ON SEPARATE ANSWER SHEET PROVIDED

 

Part-II  Give Short Answers, Each question carries equal marks. (20)

Q#1: Draw molecular orbital energy level) diagram for N molecule.

Q#2: Define the term electronegativity,

Q#3:  What is mass defect?

Q#4: How does CFT is superior to VBT?

Q#5: Phenolphthalein is a weak acid. Justify the statement

Q#6: What is leveling effect?

Q#7: Define EAN rule with example,

Q#8: Differentiate between hard and soft base according to HSAB concept.

Q#9: Justify that emission of a a-particles by a radioactive isotope shifts its two positions to the left in the periodic table.

Q#10: Differentiate between inner and outer transition elements

 

Part-III  Give Long Answers, Each question carries equal marks. (20)

Q#3: What is diagonal relationship? Elaborate this concept with few examples.

Q#4: What is isomerism? Discuss different types of isomerism in coordination compounds.

Q#5: a) Describe various uses of radioactive isotopes.

b) Write down salient features of Valence Shell Electron Pair repulsion theory.


[OBJECTIVE]

Subject: Inorganic Chemistry

Time Allowed: 15 Minutes

Maximum Marks: 10

NOTE: Attempt this Paper on this Question Sheet only. Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.

 

Part-I Encircle the right answer, cutting and overwriting is not allowed. (10)

What is the oxidation number of platinum in the coordination compound, Pt(NH3)2Cl2?

a) +1

b) -1

c) 0

d) +2

The energy gap between conduction and valence band is termed as;

a) Potential energy band

b) Kinetic energy band

c) Forbidden Zone

d) None of these

Which theory explains ionic bonding between metal ion and ligand in metal complexes?

a) VBT

b) MOT

c) CFT

d) None of the above

The Crystal Field Stabilization Energy (CFSE) for the [Fe(H2O)6]3+ complex;

a) 2.0 Δ0

b) 1.2 Δ0

c) 2.4 Δ0

d) 0.0 Δ0

The IUPAC name of K3[Fe(CN)6] is

a) Potassium hexacyano ferrate (II)

b) Potassium hexacyano ferrate (III)

c) Potassium hexacyano ferrate (IV)

d) None of these

Which one of the following ligands form a chelate:

a) Acetate

b) Oxatate

c) Cyanide

d) Ammonia

In complex formation, the central metal atom ion acts as;

a) Lewis Base

b) Lewis Acid

c) Bronsted Acid

d) Bronsted Base

Which d-orbital is used in dsp2 hybridization resulting square planar geometry?

a) dxy

b) dx2-y2

c) dz2

d) dxz

The Magic number of iron in [Fe(C0)4)-2 is;

a) 6

b) 7

c) 8

d) 9

The strength of a ligand can be determined by:

a) Spectrochemical series

b) Electrochemical series

 

[SUBJECTIVE]

Subject: Inorganic Chemistry

Time Allowed: 2 Hour and 45 Minutes

Maximum Marks: 50

NOTE: ATTEMPT THIS (SUBJECTIVE) ON THE SEPARATE ANSWER SHEET PROVIDED.

 

Part-II Give Short answers, Each question carries equal marks. (20)

Q#1: Describe Metallic Bond on the basis of Band theory?

Q#2: What is the effect of impurities on conductivity of the metal?

Q#3: Draw the M.0 diagram of Cr(CO)6

Q#4: Give postulates of Werner’s theory.

Q#5: Define Magic Number giving suitable examples.

Q#6: Draw the structure of [CoF6]-3 on the basis of MOT:

Q#7: Write a short note on Semi-Conductors?

Q#8: What are Outer orbital complexes? Give an example?

Q#9: Discuss any three methods for the preparation of Fe(CO)5.

Q#10: What are the limitations of CFT?

 

Part-III Give detailed answers, Each question carries equal marks. (30)

Q#1: Discuss the structures of following on the basis of VBT.

a) [Fe(CN)6]4- b) [Fe(H2O)6]2+

Q#2: Write a short note on Spectrochemical series.

Q#3: Explain briefly Binding Energy in metals.

Q#4: Describe the preparation and structure of Ni(CO)4.

Q#5: Predict the shape of the following molecules / ions on the basis of VSEPR model.

a) XeF4 b) NH4+ c) IF7

Q#6: Describe the bonding in metal carbonyls on the basis of IR.