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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, MAY 2019
Course Code: CY100
Course Name: ENGINEERING CHEMISTRY

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 2 marks. Marks
1 பே protons show a shift in frequency of 728 Hz from TMS signal ina (2)

100MHz NMR instrument, How much would be the shift in frequency for the
same proton from TMS in a 300 MHz NMR instrument?

2 If you take a mixture ೦87150, and ೮50, solutions in a beaker and a Zinc rod (2)

and a Copper rod are inserted in it will you get electricity? Give the reason.
3 Explain partition chromatography (2)
4 What are Carbon nanotubes? (2)
> Arrange n-heptane, isooctane, benzene, branched alkanes in increasing order of (2)

knocking tendency in petrol engine.
6 Oils having high viscosity need not be having high viscosity index. ‏.ا ہہت‎ 2
7 A water sample contains 204 mg of ೮೩5೦, per litre. Calculate its hardness in (2)

‎of CaCO3 equivalents, epee _- ர ಪಾ ಎಂ‏ 6۵ے
‎‘etn reverse osmosis. | ன இட 2 1‏ ~~ 8
‎PART B‏
‎Answer all questions, each carries 3 marks.‏

‎9 What interpretations are obtained from the chemical shifts in a molecule? (3)

‎10 A Zn rod is dipped in 0.4 M (0504 solution, displacement reaction takes place (3)
and allowed to attain equilibrium. Calculate the equilibrium constant and [Cu?*]
at equilibrium. Given that की ഷ്‌ +0.34V and 80 ‏ووببووج‎ = - 0.76V
1] Write the major applications of DTA. (3)
12 What are co-polymets? Illustrate with addition co-polymer and condensation (3)

‎co-polymer.

‎13 Describe with the significance: i) cloud and pour points ii) Flash and fire (3)
points.

‎14 What is mean by aniline point? How is it determined? (3)

‎15 How is the exhausted resin regenerated from an ion-exchange process? (3)

‎16 What is disinfection? How is it carried out using (a) UV light and (b) ൫)

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