Master of Science II (Agrochemicals and Pest Management)
Examination: Oct/Nov 2016 Semester III (Old CGPA)
SLR No. Day
Date Time Subject Name Paper No. Seat No.
SLR SP-
20
Monday
21/11/2016
2:30 P.M
to
5:00 P.M
Analysis of
Agrochemicals
C
XI
Instructions: All Questions are compulsory.
Attempt any two questions from section II
Attempt any two questions from section III.
All questions carry equal marks.
Total Marks:70
SECTION-I
Q.1
Choose the correct alternative given in the bracket. 14
nuclear spin state is of lower energy.
In acetone sets of proton are observed.
One Two
Three Six
Mass spectroscopy is technique.
Low pressure High pressure
Low temperature None of these
of following undergoes fragmentation easily by electron beam.
Ketones Ethers
Aromatic compounds Alchols
The radio isotopes have
Same atomic number and same mass number
Same atomic number and different mass number
Different atomic number and same mass number
Different atomic number and different mass number
The current due to supporting electrolyte is called
Residual current Diffusion current
Migration current None
Electron donating groups often fluorescence.
Quenching Enhance
Decrease Remains same
HPLC is used in
Pharmaceutical
chemistry
Biochemical analysis
Chemical analysis All
Page 1 of 2
The method of separation of volatile substance by using gas as a mobile
phase is called
IR GC
NMR Mass
10) The intensity of fluorescence depends upon of solution.
Volume Pressure
Concentration Polarity
11) The wavelength range for UV region of the electromagnetic radiation is

12) When value of certain molecules shift towards longer wavelength
region, then this phenomenon is known as
Hypsochromic shift Hyperchronic shift
Bathochromic shift Hypochromic shift
13) The absorption of radio frequency radiations by organic molecule is
accompanied by
Electronic level change Vibrational level change
Nuclear spin change Molecular weight change
14) Due to hydrogen bonding the IR absorption band becomes
Sharp Weak
Broad Narrow
SECTION-II
Q.2 Describe types of vibrations in IR spectroscopy. 07
Explain isotope and metastable ions in mass spectroscopy. 07
Q.3 Describe the method used for measurement of radioactivity. 07
Write the principle of polarography. 07
Q.4 Describe instrumentation of HPLC. 07
Explain different types of electronic transitions. 07
SECTION-III
Q.5 Write note on SO2 analysis. 05
Explain measurement of polarogram. 05
Write applications of neutron activation analysis. 04
Q.6 Write applications of mass spectroscopy. 05
How do you monitor the H2S in air sample? 05
Write note on finger print region in IR spectroscopy. 04
Q.7 Explain shielding and deshielding phenomenon with example. 05
Explain structural factors in fluorescence. 05
Distinguish between chromophore and auxochrome. 04