M.Sc.(A.G.P.M) (Semester III)(Old) (CGPA) Examination, 2017
ANALYSIS OF AGROCHEMICALS
Day Date: Saturday, 22-04-2017 Max. Marks:70
Time: 02.30 PM to 05.00 PM
Instructions: All questions are compulsory.
Attempt any Two questions from Section II
Attempt any Two questions from Section III
All questions carry equal marks
Section I
Q.1 Choose the most correct answer (one mark each):
14
How many fundamental vibrations can be observed in IR spectrum
of carbon dioxide molecule?
5 4 3 2
Finger print region is related to which type of spectroscopy?
IR UV Mass NMR
In case of saturated ketones the most intense band due to
transitions is around
175 nm 150 nm 190nm 110nm
Which of the following is not used as detectotor in the UV-Visible
spectrometer?
Photocell Barrier layer cell
Photomultiplier tube Scintillation counter
Scissoring, rocking, wagging and twisting are type of
vibrations
Symmetric Asymmetric
Bending None of these
Which types of radiations are observed in NMR spectroscopy?
IR Visible Microwave Radiofrequency
The most intense peak in the mass spectrum is called
Base line Base peak Ion peak None of these
How many signals can observed in PMR of ethyl alcohol
molecule?
1 2 3 4
Light released as a result of chemical reactions is called
Fluorescence Chemiluminescence
Page 2 of 2
Phosphorescence None of these
10) The radioisotopes have
Same mass number and same atomic number
Same mass number and different atomic number
Different mass number and different atomic number
Different mass number and same atomic number
11) Which of the following vitamins is polarographically active?
Thiamine Ascorbic acid Riboflavin All
12) Gas chromatography is used for analysis.
Qualitative Quantitative
Qualitative and quantitative None of these
13) Gas chromatography is also known as type of
chromatography.
Adsorption Partition
Absorption Both a and b
14) HPLC is used in
Pharmaceutical chemistry Biochemical analysis
Chemical analysis All of these
Section II
Q.2 Explain principle and instrumentation of HPLC 7
Describe neutron activation analysis and its applications 7
Q.3 Describe voltage current curves and analysis of polarogram. 7
Explain functional group region of IR spectroscopy 7
Q.4 Describe instrumentation and applications of UV spectroscopy 7
Draw schematic diagram of NMR spectrometer and describe
shielding and deshielding effect
7
Section III
Q.5 Describe analysis of ammonia 5
Draw schematic diagram of mass spectrometer 5
Write a note on finger print region. 4
Q.6 Write applications of gas chromatography 5
Write applications of fluorescence in agriculture 5
Write note on health hazards in radioactivity 4
Q.7 Explain advantages of TMS as a reference in NMR. 5
Describe GC-MS technique. 5
Write note on analysis of CO. 5