Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2133502 Analytical Techniques Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2133502 Analytical Techniques Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2133502 Date: 30/11/2019

Subject Name: Analytical Techniques
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain terms QA & QC. 03
(b) Explain various factors affecting Rf value in paper Chromatography


04
(c) Discuss theory and instrumentation of HPLC. 07
Q.2 (a) Enlist different types of errors. 03
(b) Define the term: TQM 04
(c) Explain Lambert Beer?s law of absorption with derivation. 07
OR
(c) Write notes on Chemical shift, shielding, deshielding effect and spin-spin
coupling.
07
Q.3 (a) Write a short note on column preparation. 03
(b) Write a note on FID used in GC. 04
(c)
Define the term: co-precipitation and post precipitation. Explain Gravimetric
estimation of Ni.
07
OR
Q.3 (a) Define the term: Stoichiometry 03
(b) Write a short note: Nitrogen rule. 04
(c) Write a short note on Finger print region. How will you distinguish Ethanol and
dimethyl ether using IR spectrum?
07
Q.4 (a) Enlist method of preparation of TLC plates. 03
(b) Define various ways of expression of concentration and its importance in
analytical techniques
04
(c) An organic compound (molecular formula: C6H12O2) exhibits the following
spectral data:
IR: 3330 cm-1(m), 3042 cm-1(m), 2862 cm-1(w), 1722 cm-1(s), 1405 cm-1
UV: ?max at 268 nm
NMR: ? 1.1 (6H, singlet), 2.1 (3H,singlet), 2.6 (2H,singlet), 3.9 (1H, singlet)
Deduce the structure of the compound.
07
OR
Q.4 (a) How will you distinguish inter and intra-molecular hydrogen bonding using IR
spectroscopy?
03
(b) Explain Spectroscopic behavior of p-hyhroxy benzoic acid. 04
(c) Analysis of sample gave following values of Cu content: 41.20, 41.33, 41.60,
41.37 and 41.27.Calculate the mean, median, standard deviation, coefficient of
variance and range.
07
Q.5 (a) Write the characteristic requisites for a solvent to act as mobile phase. 03
(b) Derivertisation is needed in GC - Justify the statement 04
(c) What is good laboratory practices? Explain in detail. 07
OR
Q.5 (a) Define the term: Derivertization 03
(b) What do you mean by TGA? Explain application of it. 04
(c) What are titrations? Explain EDTA titration in detail with procedure and
calculation.
07

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