This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
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B Tech. Third Semester (Chem. Engg.) Examination
(Old) (C Scheme) (Food, Pulp / Oil Tech. / Textile Tech.)
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Applied Physical Chemistry
R AW - 3551
Max. Marks : 80
Time : Three Hours
Notes:
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- Answer Three questions from Section A and Three questions from Section B.
- Due credit will be given to neatness and adequate dimensions.
- Assume suitable data wherever necessary.
- Diagrams and chemical equations should be given wherever necessary.
- Illustrate your answer necessary with the help of neat sketches.
- Discuss the reaction, mechanism wherever necessary.
- Use of pen Blue/Black ink/refill only for writing the answer book.
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SECTION - A
- a) How pH of solution is determined. 4
b) Explain activity and activity coefficient. How it is determined. 6--- Content provided by FirstRanker.com ---
c) Write short notes on. 4- Specific conductance.
- Molecular conductance.
- a) Explain Debye-Huckel's theory of strong electrolytes. 5
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b) How transport number is determined by moving boundary method. 5
c) The EMF of following concentration cell is 0.02V at 300K. Calculate the transport number of Cu+ and SO4- ions.
Pb|PbSO4|CuSO4 : CuSO4 |PbSO4|Pb
(a1 =0.02) (a2 =0.006) - a) Explain various laws of photochemistry. 4
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b) Differentiate between Electronic rotational spectra and vibrational spectra. 4
c) What is quantum efficiency. How it is experimentally determined. 5 - a) Explain photochemical kinetics with suitable example. 4
b) Give the applications of IR-Spectroscopy. 4--- Content provided by FirstRanker.com ---
c) What are the reasons for low quantum yield. 5 - a) Explain osmotic pressure method for determination of molecular weight of Macromolecules. 5
b) How macromolecules are classified. 4
c) Give brief account of 4- Number Average molecular weight.
- Weight average molecular weight.
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- a) Explain light scattering method. 5
b) Define the following. 4- Turbidity.
- High polymers.
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SECTION - B
- a) Explain Joule-Thomson effect. 5
b) What is entropy? Give its physical significance 5
c) Define. 4- Flame temperature
- Explosion temperature.
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- a) Derive Sackur-Tetrode equation. 5
b) State and explain third law of thermodynamics 5--- Content provided by FirstRanker.com ---
c) Define. 4- Free Energy.
- Entropy.
- a) How order of reaction is determined by Equi Fractional change method. 4
b) Derive an integrated rate equation for second order reaction. 4--- Content provided by FirstRanker.com ---
c) The rate constant of a second order reaction is 6.70x10-5 dm3 mol-1s-1 at 25°C and 1.64x10-4 dm3 mol-1 s-1 at 35°C. Calculate energy of activation.
(R=8.314 J K-1 mol-1) - a) What is energy of activation? How it is determined by using Arrhenius equation. 4
b) Show that Kp =Kc (RT)Δn. 5--- Content provided by FirstRanker.com ---
c) From the following data for the decomposition of NH4NO2 in aqueous solution, show that the reaction is first order 4
Time 0 10 20 125 ∞ Volume of N2 (C.C) 0 6.25 12.35 35.05 ∞ - a) How surface area is determined by BET method. 5
b) What is integral heat of adsorption. 4
c) Explain. 4- Autocatalysis.
- Catalytic activator.
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- a) Explain Langmuir's isotherm. 5
b) Differentiate between homogenous catalysis and heterogeneous catalysis. 4--- Content provided by FirstRanker.com ---
c) State some important characteristics of catalyst. 4
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This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university