M.Sc.(A.G.P.M) (Semester Examination,(New CBCS) 2017
ANALYSIS OF AGROCHEMICALS
Day Date: Saturday, 22-04-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
N.B. All Sections 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
In thin layer chromatography used as solid support
Silica gel Alumina
Kieselghur All of these
The main components of HPLC are
High pressure pump Injector system
Detector All of these
The basic unit of radioactivity is
Dynes Curie Debye Newton
Which of the following is not used as detector in HPLC?
Scintillation counter Fluorescence detector
UV Refractometer
Which of the following solution is added as maximum suppressor
in polarographic experiment?
Soap solution Glucose solution
KCI solution Gelatin solution
The current due to supporting electrolyte KCI is
Residual current Diffusion current
Migration current Direct current
is more energetic.
n-pi pi-pi
In paper chromatography water adsorbed on paper acts
Mobile phase Stationary phase
Indicator All of these s
Page 2 of 2
______spectroscopy gives information regarding bonding present
in the molecule.
IR UV NMR Mass
10) The carbony1 stretching frequency in ketone is
1720 1750 1500 2500
11) The Rf value depends upon
Solvent system Temperature of environment
Size of vessel All of these
12) M+2 peak in mass spectra is observed due
H Br O N
13) Methy1 protons in case of impure ethanol gives the splitted peak
having ______multiplicity
Singlet Doublet Triplet Quartet
14) The Rf value is always
One Less than one Two Three
Section- II
Q.2 Describe the H2S monitoring in air sample. 07
Write applications of radioisotopes in agriculture. 07
Q.3 Describe principle, development and applications of paper
Chromatography.
07
Describe instrumentation of IR spectroscopy. 07
Q.4 Draw a schematic diagram for experimental setup of
polarography and discuss its principle and working.
07
Draw a schematic diagram of mass spectrometer and
describe its Working.
07
Section- III
Q.5 Explain applications of fluorescence measurement in
Pesticide residue analysis.
05
Describe different types of electronic transitions in UV
Spectroscopy.
05
Write note on Mc-Lafferty rearrangement. 04
Q.6 Explain with suitable example shielding and deshielding
effect.
05
Write a note on neutron activation analysis. 05
Describe NOx monitoring. 04
Q.7 Predict the NMR spectra of n-butanol and benzaldehyde. 05
Write applications of UV spectroscopy. 05
Write a note on types of vibrations in IR spectroscopy. 04