Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) B.Sc (Non-Medical) 2020 March Previous Question Papers
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. (Non Medical) (2018 & Onwards) (Sem.?1)
INORGANIC CHEMISTRY
Subject Code : BSNM-102-18
M.Code : 75743
Time : 3 Hrs. Max. Marks : 50
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying ONE mark
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Define the following :
a) Why are half filled orbitals are more stable?
b) What are the maximum number of hydrogen bonds that a molecule of water can
have?
c) Out of LiCl and LiF which has more covalent character and why?
d) Give the shape and geometry of XeF
4
.
e) What is the packing efficiency of NaCl?
f) How do we assign angular quantum number if n=4?
g) Give the trend of ionisation enthalpy as we go down the group.
h) Define ion-dipole forces.
i) Discuss the shielding effect in while going down in a group in a periodic table.
j) What is the hybridisation of PC1
5
?
SECTION-B
2. Differentiate between the following :
a) Normalised and Orthogonal wave function
b) Valance band theory and VSEPR theory
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1 | M-75743 (S105)-678
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. (Non Medical) (2018 & Onwards) (Sem.?1)
INORGANIC CHEMISTRY
Subject Code : BSNM-102-18
M.Code : 75743
Time : 3 Hrs. Max. Marks : 50
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying ONE mark
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Define the following :
a) Why are half filled orbitals are more stable?
b) What are the maximum number of hydrogen bonds that a molecule of water can
have?
c) Out of LiCl and LiF which has more covalent character and why?
d) Give the shape and geometry of XeF
4
.
e) What is the packing efficiency of NaCl?
f) How do we assign angular quantum number if n=4?
g) Give the trend of ionisation enthalpy as we go down the group.
h) Define ion-dipole forces.
i) Discuss the shielding effect in while going down in a group in a periodic table.
j) What is the hybridisation of PC1
5
?
SECTION-B
2. Differentiate between the following :
a) Normalised and Orthogonal wave function
b) Valance band theory and VSEPR theory
2 | M-75743 (S105)-678
3. a) Define Heisenberg uncertainty principle with its mathematic expression.
b) A cricket ball weighing 100gm is to be located within 0. 1?. What is the uncertainty
and its velocity. (h = 6.626 ? 10
?34
JS).
4. Differentiate between the following :
a) Frankel defect and Schotky defect
b) Dipole-dipole and induce dipole interaction
5. Calculate the effective nuclear charge of following using Slater?s rule :
a) 4s e
?
in potassium atom
b) Last electron with configuration 1s
2
2 s
2
2p
6
3s
2
3p
5
c) One of the 3d electron of Vanadium (Atomic No.-23)
6. a) Explain Born Haber cycle and give its applications.
b) Explain semiconductors, conductors and insulators on the basis of band theon with
diagram.
SECTION-C
7. Draw the molecular diagram of O
2
, O
2
2?
and O
2+
. Compare them on the basis of its bond
order and magnetic behaviour. Also calculate its bond length and bond dissociation
energy . (10)
8. a) Determine the following for the FCC structure : (6)
i) Packing efficiency
ii) Radius ratio
iii) Relation between radius and length
b) Derive the Born-Lande equation. (4)
9. a) Illustrate the Schrodinger wave equation in one dimensional box. (6)
b) Give brief description of following : (4)
i) Hund?s Rule
ii) Pauli?s Exclusive principle
iii) Afbau principle
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 02 April 2020