Reg No.:

Max. Marks: 100

YD ~ +> ~

10

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01 0 0 Y100092001 Pages: 3

Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
B.Tech Degree S1,S2(S,FE) Examination May 2021(2015 Scheme)

Course Code: CY100
Course Name: ENGINEERING CHEMISTRY

PARTA

Answer all Questions. Each question carries 2 Marks
Write the equation for the number of vibrational degrees of freedom in a linear
molecule if the number of atoms in the molecule is ‘n’ and hence predict the
number of vibrational degrees of freedom in HCl.
Write Nernst equation for equilibrium reduction potential of a half cell and
explain the terms.
What is 1२६ factor in TLC?
What are fullerenes?
Define aniline point.
What is natural gas? Distinguish between LNG and CNG
Calculate the carbonate and non-carbonate hardness of a water sample having
14.6mg/L of Mg(HCO3)2, 16.2 mg/L of Ca(HCO3), 6 mg/L of MgSO4.
What are the factors affecting dissolved oxygen in water?

PART B

Answer all questions. Each question carries 3 Marks
Calculate the C-H stretching frequency, provided that the force constant of the
bond is 5 x 102 Nm’! and mass of carbon atom is 20 x 107” Kg and hydrogen
atom is 1.6 x 10 7 Kg.
With the help of a diagram explain the determination of standard electrode
potential of a zinc electrode using SHE.
A resistance of 0.15 N solution of a salt contained in a volume between two
electrodes 5 cm apart and 12.5 cm? in area was found to be 80 ohms. Calculate
specific conductance of the solution.
Write the preparation and any two properties of ABS.

Calculate the gross and net calorific values of coal having the following

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Duration: 3 Hours

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