M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Chemistry
INORGANIC CHEMISTRY I
Time: 2½ Hours
Max. Marks: 70
Instructions: All questions are compulsory. All questions carry equal marks. Figures to the right indicate full marks. Neat and labeled diagrams should be drawn wherever necessary. Use of log table and calculator is allowed.
Q.1
Select the most correct alternative for each of the following and rewrite the sentence
14
What is the value of 'plank's constant in SI unit?
6.626176×10−34 Joule-sec
6.62×10−34 KJ/sec
6.62×1034 Joule.sec
6.62 KJ/sec
The first exited state configuration of low spin d4 octahedral system is
2Eg
5T2g
5Eg
3Eg
What is the bond angle in NF3 molecule?




Which type of semiconductor will be produced after doping of in
p-type
pn-type
n-type
npn type
Which of the following is thermonuclear reaction?
238U92 1n0 93 NP239 0 e-1
41H1 2He4 20e1
8U92 12C6 98 Cf240 4 1n0
27Al13 4He2 30P15 1n0
The frequency below which no electrons are emitted from the surface is called as frequency.
minimum
threshold
maximum
angular
The energy difference between dxy orbital and dx2−y2 orbital in a complex with tetrahedral geometry is
0Dq
6Dq
4Dq
10Dq

The structure of SF4 molecule is
Tetrahedral
Trigonal Pyramidal
See-Saw
Square planar
What is the range of conductivity of semiconductors?
10−5 to 103 ohm−1 cm−1
10−1 to 10−5 ohm−1 cm−1
10−5 to 103 ohm.cm
103 to 109 ohm−1 cm−1
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SLR-VF-117
10) 238U92 disintegrate by a series of α and β emission to form 230Th90 the number of α and β particle emitted are
4 α particle
3 α and 1 β particle
2 α and 2 β particle
1 α and 3 β particle
11) In the ionization chamber primary gas used is
Nobel gas
H2 gas
N2 gas
Cl2 gas
12) The total number of isomers formed by Co(NH3)4(NO2)2 is
0
6
4
2
13) Which quantum numbers can decide the value of radial function
n and
m and λ
n and λ
n and m
14) How many M-M bonds are present in Ir4(CO)12 molecule?
Two
One
Six
Four
Q.2

Answer any four of the following questions
08
Give the equation of Compton shift.
Draw the structure of Re3Cl9.
What is Walsh diagram?
Give two important applications of bipolar junction transistor.
What is nuclear coulombic barrier?

Write note on any two of the following questions
06
Atomic spectra
Spin orbital coupling
G. M. counter
Q.3

Answer any two of the following questions
08
How are matter waves different from electromagnetic waves?
Distinguish between Spectrochemical and Nephelauxetic series.
Explain artificial transmutation.

Answer any one of the following questions
06
Explain the effect of bonding on structural properties and reactivity of compounds.
What are the semiconductors? Discuss the doping of semiconductors and their conduction mechanism.
Q.4

Answer any two of the following questions
10
What are radial and angular wave functions? From the complete wave function explain the shape of s orbital.
Give the explanation of quenching of orbital angular momentum.
What is meant by Q values of nuclear reaction? Explain with suitable example.

Answer any one the following questions
04
Discuss the basic principles of VSEPR theory.
Explain the construction and working of photovoltaic cell.
Q.5
Answer any two of the following questions
14
Derive the expression for the energy of particle in a one dimensional box. Give the significance of each term.
What is the spin of complex? Explain the factors affecting the spin of complex.
What is nuclear fission reaction? Give mechanism of fission reaction on the basis of liquid drop model.