Download JNTUA B.Tech 1-1 R19 2020 January 19A51103T Fundamental Chemistry Question Paper

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Code: 19A51103T


B.Tech I Year I Semester (R19) Regular Examinations January 2020
FUNDAMENTAL CHEMISTRY
(Food Technology)

Time: 3 hours Max. Marks: 70

PART ? A
(Compulsory Question)

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1 Answer the following: (10 X 02 = 20 Marks)
(a) Explain effect of doping on band structures.
(b) What are the bond order present in O 2 and CO?
(c) Define conductivity, give the units.
(d) What are the photovoltaic cells?
(e) What is the functionality of polymer?
(f) What are the uses of conducting polymers?
(g) Draw the electromagnetic spectrum.
(h) Define Bathochromic shift.
(i) What is micelle formation?
(j) Give BET equation.

PART ? B
(Answer all five units, 5 X 10 = 50 Marks)

UNIT ? I

2 (a) Define anti bonding orbital. Explain pi-molecular orbital diagram of Butadiene.
(b) Give brief note on dual nature of matter.
OR
3 (a) Explain crystal field splitting in octahedral geometry.
(b) Explain significance of ? and ?
2
.

UNIT ? II

4 (a) Define reference electrode, explain Ag/AgCl electrode.
(b) Give brief note on potentiometric sensors.
OR
5 (a) Give detailed explanation about methanol fuel cell.
(b) Explain acid base conductometric titrations.

UNIT ? III

6 (a) Explain condensation reaction mechanism by taking suitable example.
(b) How Bakelite will be prepared? Give its important applications.
OR
7 (a) Explain mechanism of conduction and applications of polyacetylene.
(b) Give brief note on carbon fibres.

UNIT ? IV

8 (a) What is the basic principle involved in IR spectroscopy? Give its important applications.
(b) Explain stationary phase and mobile phase in chromatography.
OR
9 (a) What is the basic principle involved in HPLC? Give its important applications.
(b) Give important applications of potentiometry.

UNIT ? V

10 (a) Explain preparation of nanomaterials and its stabilization.
(b) Give brief note on solid ? liquid interface.
OR
11 (a) Describe stabilization of colloids and important stabilizing agents.
(b) How nanomaterial will be characterized by TEM.Explain.
*****
R19
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