GTU BE 3rd Semester 133502 Analytical Techniques Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?III (OLD) – EXAMINATION ? SUMMER 2018
Subject Code: 133502 Date: 23/05/2018
Subject Name: Analytical Techniques
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define the term: Chromatography. Explain theory and instrumentation of Gas
chromatography.
07
(b) What is Quality? Write short notes on: QC & TQM. 07

Q.2 (a) Write note on good laboratory practices and sampling of liquid. 07
(b) What are absorption laws? Explain both the laws with derivation used in UV-
Visible spectroscopy.
07
OR
(b) 1. What is Rf value? Explain various factors affecting Rf value in paper
Chromatography.
2. Enlist different methods for the preparation of column.
07

Q.3 (a) Explain volumetric estimation of brass alloy with procedure and calculation. 07
(b) What are the characteristics should pumps have used in HPLC. Discuss any one
in detail with diagram.
07
OR
Q.3 (a) What is titration? Explain complex metric titrations in details with suitable
example
07
(b) Write a note on column Chromatography. 07

Q.4 (a) Write detailed note on TGA (thermo-gravimetric analysis) and validation of
analytical methods.
07
(b) Write short notes on: Errors, Metal ion indicators, Quality control 07
OR
Q.4 (a) Explain gravimetric analysis of Nickel. 07
(b) Give details of precipitation, co-precipitation, post precipitation and
precipitation from homogenous solution.
07

Q.5 (a) Explain principle, instrumentation and working of Mass spectroscopy 07
(b) Define following terms: normality, stoichiometry, titration, oxidation, molarity,
saturated solution, strength.
07
OR
Q.5 (a) Explain instrumentation and application of IR spectroscopy. Also explain the
difference between formaldehyde and formic acid on the basis of IR
spectroscopy.
07
(b) Define following terms: Electromagnetic spectrum, Red shift, Finger print
region, Hook?s law, Degree of freedom, Nitrogen rule, Chromophore.
07
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