Master of Science II(Industrial Chemistry)
Examination: Oct/Nov 2016 Semester III (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR-SD-
201
Monday
21/11/2016
02:30 P.M
to
05:00 P.M
Instrumental Analysis
C
XV
Instructions: Attempt in all five questions.
All questions carry equal marks.
(Section-I) Q.1 is compulsory.
Attempt any two questions from Section II
Attempt any two questions from Section III
Use of log table and calculators in allowed.
Total Marks:70
SECTION I
Q.1 Answer the following: 14
Arrange the following compounds in order of their increasing wave number of
absorption due to C=C stretching.
What is sensor?
Which ionic conductor is used to detect fuel gases?
What are the factors that complicate IR spectrum?
What is the basis of turbidimetric analysis?
What is McLafferty rearrangement?
What is the most important feature of a compound containing one chlorine
atom?
Define coupling constant.
Which metal complexes are used as shift reagent?
What is spin- spin relaxation?
Which ionic conductor is used to make flue gas monitoring sensor?
How many peaks are expected in the 13C spectrum for neopentane
HETCOR Experiment correlate 13C nuclei with directly attached
The IR stretching frequency of Carbonyl group in Cyclopropanone is greater
than that of Cyclobutanone. Why?
SECTION II
Q.2 Explain in detail classification of metal membrane electrode. 07
What is Pascal's Triangle? Explain its use in first order splitting with suitable
example.
07
Q.3 How would you distinguish between the reactant and product using DEPT
NMR? Explain with an example.
07
Page 1 of 2
Describe fragmentation modes of the following compound whose mass
spectrum exhibits peak at m/e 108 107,79,77,51
07
Q.4 Explain pH sensing glass membrane electrode. 07
Discuss in detail time-of-flight mass analyzer. 07
SECTION -III
Q.5 Explain with example gas sensing membrane electrode. 05
An organic compound of molecular formula C7H7Br shows the following
features:
IR(KBr) 1600cm-1
1HNMR 1.2δ 7. 0δ 6.7δ 2H, J=8Hz)
Make proper assignment of the data
05
Describe fragmentation modes of the following compound whose mass
spectrum exhibits peak at m/e 121,120,92,65,64
04
Q.6 Explain how the carbonyl stretching frequency changes in Trans Cinnamic acid
with respect to ciscinnamic acid.
05
How will you differentiate the following compounds by 13C NMR? 05
An organic compound of molecular formula C8H10O shows the following
features:
IR(KBr) 3200-3400 cm-1 (broad)
1HNMR 2.9 δ 3.9δ 7.2δ
2.2 δ exchangeable with D2O)
Make proper assignment of the data
04
Q.7 Write a note on any three of the following: 14
NOSEY spectroscopy
Finger print region
AB and AX Spin system
Spin decoupling Experiment