II B.Tech I Semester Supplementary Examinations, November 2005 PHYSICAL CHEMISTRY (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
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1. (a) In the distribution of acetic acid between n-butyl alcohol and water at 25o C, the concentration of acetic acid in n-butyl alcohol layer is 0.12 mol dm−3 . Find out the concentration of acetic acid present in the aqueous layer in equilibrium with it if the distribution coefficient of acetic acid between n-butyl alcohol and water is 1.2 at 25o C.
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(b) Explain the advantages of partition coefficient for efficiently extracting the solute from a solution. [6+10]
2. (a) What are the basis for various Chromatographic methods.
(b) Write the qualitative applications of Chromatographic methods.
[6+10]
3. (a) Derive Rault’s law.
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(b) In a solvent, n simple molecules of solute combine to form an associated molecule and x is the degree of association. Obtain an expression for Van’t Hoff factor. [8+8]
4. (a) Discuss the phenomenon of osmosis and its origin. (b) Explain how osmosis is a colligative property?
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(c) Derive a relationship between molecular weight and elevation in boiling point. [6+4+6]
5. (a) Explain the phenomena of “Chemiluminiscence”. (b) Write a note on “Photosynthesis”. [8+8]
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6. (a) Explain Faraday’s laws of electrolysis? How can the laws be experimentally verified? What is the importance of laws? (b) A current passing for 3 minutes through a dilute H2 SO4 solution gives 40 cc of electrolytic gas (H2 + O2 ) at NTP. What is the average value of the current? [10+6]
7. (a) What is meant by dipole moment? Name two molecules that show a dipole moment and two molecules which do not show it. 1 of 2
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Code No: NR210801
(b) Calculate the density of naphthalene decahydride (C10 H18 ) from its refractive index value of 1.4804 at 18 o C. [10+6] 8. (a) Explain how the depression of freezing point is a colligative property? (b) The freezing point of 1/200molal solution of Na2 SO4 is 0.02650 C. Calculate the degree of dissociation given Kf = 1.86.
NR210801 II B.Tech I Semester Supplementary Examinations ...
NR. (b) Calculate the density of naphthalene decahydride (C10H18) from its refractive index value of 1.4804 at 18 oC. [10+6] · 8. (a) Explain how the depression ...
(b) Explain the basic principle of the instrument used for Condition monitoring · of any process. [8+8] · 2. (a) Compare and construct the functioning of rupture ...
What is the theory of lubrication? Explain how surface tension plays a role in the · performance of lubricating oils and hydraulic fluids? What is surface tension ...
(b) What is the purpose of providing âbondsâ in brick work. With the help of · neat sketches illustrate âEnglish bondâ. [8+8] · 2. (a) What is a âdamp-proof courseâ?
A silica brick layer on inside is laid to 150mm thickness and a · magnesia brick of 200mm thickness on outside. The inside and outside wall · surfaces are at 650 ...
(b) The following observations are related to a closed compass traverse ABCD. Find out the stations which suffer local attraction and give the values of the.
2. Explain the following: · (a) Reynolds number · (b) Nusselt number · (c) log mean temperature differene. (d) importance of heat transfer in furnace technology.
diagrams. Show that the entropy change during the cycle is zero ... if the small amounts of argon and carbon oxide present in the mixture are · neglected.
(a) Job order production and batch production system. (b) Mass production and flow production. [4+4+4+4] · 7. DefineâCritical pathâ, âslack timeâand âDummy ...
(b) One bag contains 4 White balls and 3 black balls and a second bag contains 3 ... [8+8] · 3. (a) The amount of bread ( in hundreds of pounds) X that a certain ...
(c) Explain sign conventions of heat and work in thermodynamics. [5+5+6] · 3. (a) State and explain second law of thermodynamics. (b) Define and explain ...
b=4.318 cm is fed by a 4 GHz carrier from a coaxial cable. Determine if a · TE10 mode will be propagated. If so calculate the phase velocity and group · velocity.
(c) An amplifier with voltage gain of 60 decibels uses 0.05 of its output voltage in · negative feedback. Calculate the gain of the feedback amplifier. [6+6+4].
Determine the length of the wire needed if the diameter · of the wire is 0.25 mm. Assuming that the temperature coefficient of resis- · tance of the wire is constant, ...
(b) Draw the block schematic of 4x1 MUX and give its truth table. [6] · 6. (a) Design a full adder with minimum number of NAND gates. [8] · (b) Draw the logic ...
8. (a) Enumerate various mechanical and diffusion properties of cartilage with ex- · amples? [8] · (b) Write briefly about âlubricationâ of joints? [8] · *****. 1 of 1.
Black body and Grey body. iii) · Reynolds number and Nusselts Number. 4.a) Derive Reciprocity theorem when the heat exchange is taking place between the.
Polynomials in single variable are stored in the form of linked lists. Each · structure has space for one coefficient and one exponent and a link. Assume.
armature and field resistances are 0.03 ohm. And 60 ohm ... 6.a) Explain with the help of diagrams how a rotating magnetic field is produced in · the air gap of a ...
(figure.1). (c) Obtain Thevenin's equivalent circuit for the network below figure 2. 1 of 3 ... (a) Obtain open circuit and short circuit parameters. Obtain relation ...
Show the reaction mechanisms of the following reactions. (a) Gatterman reaction. ... How will you determine the configuration of glucose with the help of Fischer's method? 7. (a) What ... Explain the theory of colour and constitution? *****. 1 of 1.
Maximize the following problem using Simplex Method. Z = 10x + y + ... 10; x1, x2 ⥠0. 8. Write short notes on the following: (a) Kuhn-Rucker conditions. 1 of 2 ...
b) State the method of manufacturing and special qualities of the following bricks. (i) sand â lime bricks (ii) Fly ash bricks (iii) Stabilised bricks. c) Explain briefly ...
