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Reg No:: Name:

B2802

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‎TRINA Ss

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, APRIL 2018
Course Code: CY100
Course Name: ENGINEERING CHEMISTRY

Max. Marks: 100 Duration: 3 Hours

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en Ay ‏تق ~ جح‎

PART A
Answer all questions, each question carries 2 marks

How many signals are observed in the 'H NMR spectrum of Cl-CH2-CH2-Cl?
Substantiate your answer.

Draw a schematic, neatly labelled diagram of Saturated Calomel Electrode.
Define Rr value of a compound.

Give any two applications of carbon nanotubes.

Suggest any two methods for increasing the octane number of a fuel.
Comment on the significance of viscosity index of a lubricant.

What are ion exchange resins? Give one example.

State the importance of measuring dissolved oxygen in water.
PART B
Answer all questions, each question carries 3 marks

Calculate the molar absorptivity of 0.5x10°M dye solution in ethanol, which shows
an absorbance of 0.17, when 1.3cm cuvette is used.

Describe the principle and working of glass electrode. Give the standard
representation.

List out any three important applications of HPLC.

Explain the preparation and properties of Kevlar.

How is aniline point determined?

What are biofuels? Comment on their environmental benefits.
Suggest an anaerobic process for the treatment of waste water. Explain the principle.

Explain temporary hardness of water. How is it removed?
PART C
Answer all questions, each question carries 10 marks

a) Sketch the modes of vibrations possible for CO2. Which are IR active? Give
reason.
b) Explain spin-spin splitting in the "HNMR spectrum of ethanol.
OR
a) What are the various electronic transitions possible for a molecule?
b) Discuss the instrumentation of UV spectroscopy with labelled sketch.

a) Explain how the single electrode potential of an electrode is determined using

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