B . NSA192009

Reg ಜಂ.

ನವ ದಾರ್‌
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION(2019 SCHEME), DECEMBER 2019

Course Code: CYT100

Course Name: ENGINEERING CHEMISTRY
(2019-Scheme)
Max. Marks: 100 Duration: 3 Hours
PART A
Answer all questions, each carries 3 marks.
1 Calculate the equilibrium constant for the following reaction at 25°C:-

Feo + € 2+ =F 2+ 0 Gi 02 _ 70 2 ‏ہے‎ )3(
(൭) ध (aq) € ˆ (ag) + Cu ७) Given உ ள்‌ -0,44 ५, 8 ഡ്‌ ८५ = 0.34 ५

2 Give the electrochemical reaction taking place when an iron nail is dipped in
6111101, Boke” ൦ -0,44 V, ಹೆ അ -0,04 ۷, நட்டி 0 ५. ^
3 State and explain the law governing absorption of electromagnetic radiation by
matter. Give any one limitation of this law. (3)
4 Which molecule will absorb at longest wavelength in UV? Explain.
a) ~) b) O (3)
٠
5 What are the classifications of chromatography based on physical state of
mobile and stationary phases? ^“
6 Explain the synthesis of nanoparticles by chemical reduction. (3)
7 Write the IUPAC name and assign R/S notation.
C2Hs
H cl (3)
HO H
CH,
8 Write the different types of copolymers formed by the monomers A and B. (3)
9 Calculate the hardness of (i) 0.05 M AICI, and (ii) 0.04 N MgCh. (3)
10 What is the significance of measuring BOD of waste water? (3)
PART B
Answer one full question from each module, each question carries 14 marks
Module-I
11 ஐ Explain the construction and working of a calomel electrode as a reference
electrode. What is the variation in the potential of a calomel electrode with (8)

change in chloride ion concentration?

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