Analytical Chemistry M.Sc. PU — University of the Punjab 2020
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FG Study
ON UNIVERSITY OF THE PUNJAB
M.A./M.Sc. Part - I Annual Examination - 2020
nistry
Paper: IV
(ii) [Analytical Chemistry] (New Course)
Roll No.
Time: 3 Hrs
NOTE: Attempt any FOUR questions. All questions carry equal marks.
Marks: 100
) Distinguish between error and deviation.
www.FOST 3; 10,
12
) Discuss different types of determinate errors. How they can be minimized?
) The percentage of a constituent 'A' in a compound AX was found to be 58.41, 58.32;
58.36, 58.23, 58.11 and 53.38 percent. Calculate the standard deviation, variance and
the relative deviation in parts per thousand.
) Explain the extraction of metals by solvent extraction. How does pH affect the
efficiency of extraction?
) Write about different forms of solvent extraction.
) Write a detailed note on solid phase extraction.
FGSTUDY.com
8, 8,
9
) Define chromatography. Give the classification of chromatographic methods. 8, 12,
5
) What is efficiency of the column? Explain the factors affecting efficiency of column.
) What is gradient elution?
) How flame is used as atomizer? Explain its event
9, 9,7
) Explain the principle of hydride generation AAS with the help of a diagram. What are
ur its specific advantages?
) Draw the optical layout of flame photometer. Briefly discuss its components
) Define the term spectroscopy. Give brief description of radiation source, filter and
detector in UV/Vis spectrophotometer.
10, 7,
8
) What is the effect of conjugation on UV/Vis spectra?
) Compare the single beam spectrophotometer with double beam spectrophotometer.
) What is the principle of ion-exchange chromatography? Write a note on cation and
anion exchange resins.
FOSTUDYO: 10, 7,
8
) What is the basis of separation in electrophoresis? Give different types of capillary
electrophoresis
Differentiate between paper and thin layer chromatography.
Briefly discuss sample injection system in flame photometry 10,15
What are the flameless techniques in AAS spectroscopy. Explain them in detail
