2 No.:

Max. Marks: 100

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‎Name: ಜರ தம்‌‏

‎APJ ABDUL KALAM TECHNOLOGICAL UNIVERSTFY~ ~
B.Tech examinations (5) September 2020 51/52 (2015 Scheme)

‎Course Code: CY100
Course Name: ENGINEERING CHEMISTRY

‎PART A

‎Answer all questions, each carries 2 marks.
Calculate the gyro magnetic ratio of protons if protons resonate with 200MHz
radiofrequency in 4.7 tesla magnetic field.
Write the fuel cell reactions taking place at anode and cathode in ‏عوط‎ റം fuel
cell when an acid electrolyte is used.
Define the terms stationary phase and mobile phase.
What are OLEDs?
Gasoline containing tetra ethyl led (TEL) was used in internal combustion
engines. Give reasons. Why the use of it was banned?
What is cetane number?
What is the reason for hardness of water? How is it expressed?

‎What is the significance of BOD and COD in the sewage water treatment?

‎PART B
Answer all questions, each carries 3 marks.

‎There are two oxygen isotopes ₹೦ and 180 in CO gas sample. If 50-50
shows IR absorption at 2140 ണ്‌. What will be the IR absorption wavenumber
௦70-150 molecule, assume that both molecules have the same force constant.
Which material is used as positive electrode in Li-ion battery? Write the
reaction taking place at positive electrode during charging. Why the cells
become explosive on 100% charging (ie, x=1)?
Discuss the classification of chromatography.
Distinguish between 1,2 addition and 1,4 addition polymers give example for
each.
Compare the merits and demerits of solid, liquid and gaseous fuels?
What is Biodiesel? Explain the preparation.

‎Calculate the carbonate and non carbonate hardness of a sample water

‎Page 1 of 3

‎Duration: 3 Hours

‎Marks

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‎3)

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