M.Sc.(A.G.P.M) (Semester (C.B.C.S) Examination, 2017
ANALYTICAL TECHNIQUES FOR AGROCHEMICALS
Day Date: Friday, 21-04-2017 Max. Marks: 70
Time:10:30 AM to 01.00 PM
N.B. All Sections are compulsory
Attempt 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
Quinhydrone is mixture of quinine hydroquinone
1:2 1:1 2:3 3:5
Which is the first step of stripping analysis?
Concentration Stripping
Oxidation Dissolution
The titrations in which end points are determined by emf
measurements are called titrations.
Coductometric Colorimetric
Potentiometric PH metric
In a conductivity cell plates are used as a electrode.
Copper Aluminium Zinc Platinum
In potentiometric titration the potential of indicator electrode
depends on the of ions present in the solution.
Pressure Temperature
Volume Concentration
Silica gel is phase in TLC
Stationary Mobile Reverse Normal
All chromatographic techniques are based on the principle of
Electrolysis Separation
Salvation Precipitation
In paper Chromatographt, the Rf value is given by the
equation____
Distance travelled by solute divided by distance travelled by
solvent
Distance travelled by solvent divided by distance travelled by
solute
Distance moved by component divided by distance moved by
solute
Distance moved by the substance divided by distance moved by
solute
Page 1 of 2
EDTA is used
Titrant Titrand Indicator None of these
10)Primary standard solution in titrimetric analysis is known as
Secondary standard solution
Dilute solution
Concentrated solution
Solution of exactly known concentration
11)Which of the following is used as the primary standard in redox
titration?
KMnO4 K2Cr2O7 CaCO3 HCI
12)Flame photometry is also known spectroscopy
Flame emission Molecular
Atomic None of these
13)In simple flame photometer, the monochromator is
Prism Grating Slit All of these
14)In photomultiplier tubes is present.
Photocathode Photoanode
Photon None of these
Section II
Q.2 Describe principle, procedure and application of column
chromatography.
07
What are acid-base indicators? Discuss the neutralization curves
for strong acid and weak base titration.
07
Q.3 What is precipitation titration? Describe experimental procedure for
determination of halide ion in solution by precipitation titration.
07
Write construction and working of glass electrode.
Q.4 Describe principle, procedure and application of thin layer
chromatography.
07
Write principle and instrumentation of atomic absorption
spectroscopy.
07
Section III
Q.5 Explain metallochromic indicators in brief. 05
Describe potentimetric precipitation titration. 05
Write application of polarimeter in pesticide analysis. 04
Q.6 Describe the process of solvent extraction in detail. 05
Write principle and methodology of stripping voltametry. 05
Write note on specific and equivalent conductance. 04
Q.7 Write applications of Nephelometer and Turbidimeter. 05
Write application of flame photometer in qualitative and
quantitative analysis
05
Write note on gravimetric estimation of SO4
04