Mody Institute of Technology and Science End Term Examination, B.Tech(CS) Chemistry || (CY 106) University model question papers



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Posted Date: 22 Nov 2011      Posted By:: Urvashi    Member Level: Gold  Points: 5 (₹ 1)

2011 Mody Institute of Technology and Science B.Tech. Computer Science and Engineering End Term Examination, B.Tech(CS) Chemistry || (CY 106) University Question paper



Course: B.Tech. Computer Science and Engineering   University/board: Mody Institute of Technology and Science





Course Name: Chemistry || Time: 3 hr
Course Code: CY106 Max. Marks:100




Attempt question number 1 and any five from the rest.



Q1.
(1) A reaction is found to be zero order reaction, will its molecularity be also zero?
(2) What would be the units of first order rate constant if the concentration is expressed in moles/litre and time in seconds?
(3) What is the significance of suffix-66 in nylon-66?
(4) Give an example of monomer undergoing cationic polymerization?
(5) Write the total no. of hexagonal and pentagonal faces in C60 fullerene?
(6) What do you understand by critical temperature of a superconductor?
(7) Write any two important functions of lubricants?
(8) Give one example each of a solid and semi solid lubricant.
(9) How many types of electronic transitions occur in UV spectroscopy?
(10) What do you undestand by Chemical shift in NMR spectroscopy? [MARKS 2*10=20]


Q2.
(1) Derive the integrated rate equation for the second order reaction with two different reactants.
(2) Thermal decomposition of a compound is of half order. If 50% of a sample of the compound is decomposed in 120 minutes,
how long will it take for 90% of the compound to decompose?
(3) Write the mechanism of Wilkinson's catalyst. [MARKS 8+3+5=16]


Q3.
(1) What are the different steps of free radical polymerization? Why the polymers formed by cationic polymerization are called as living polymers?
(2) Write a short note on vulcanization of rubber.
(3) Depict the basic structural unit and uses of(a) Polyamides and (b) Polyester [MARKS 7+5+4=16]


Q4.
(1) What is the differnce between order and molecularity of a reaction?
(2) Explain Atactic, Isotactic, and Syndiotactic polymers.
(3) Derive the kinetic expression for unimolecular surface reactions,
(4) Write down the different types of silicone polymers and its apllications. [MARKS 3+3+5+5=16]


Q5.
(1) Write any two differences between semiconductors and organic conducting materials.
(2) What is superconductivity? What are the parameters upon which superconductivity depends? Mention some important applications of superconductors.
(3) What are the different ways of making an insulating polymer electronically conducting? [MARKS 2+8+6=16]


Q6.
(1)What do you understand by lubrication? Define any two mechanisms of lubrication?
(2) Explain the following properties of lubricants and give their significance:
(a) cloud and pour point
(b) viscosity and viscosity index
(c) flash and fire point [Marks 7+9=16]


Q7.
(1) State Lambert-beer's law. What is its significance in spectroscopy?
(2) Explain the following terms:
(a) Modes of vibration in IR spectroscopy.
(b) Hypsochromic and Bathochromic shift.
(c) How to distinguish between ethyl alcohol and ether in IR spectroscopy. [MARKS 4+12=16]


Q8.
Write short notes on any four of the following:
(a) Sulphur polymer
(b) Cyclic voltmetry
(c) Emulsification
(4) Nano materials
(e) Fullerenes
(f) Basic principle of NMR spectroscopy
(g) Half lives and its significance [MARKS 4*4=16]





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