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Model Question Paper-2 with effect from 2021 (CBCS Scheme)
First Semester Engineering Degree Examination
Subject Title 21CHE12/22
TIME: 03 Hours Max. Marks: 100
Note: Answer any FIVE full questions, choosing at least ONE question from each
MODULE.
MODULE 1 Marks
Define Single Electrode Potential. Obtain the expression for single electrode
a 7
potential.
Q.1 What are ions Selective Electrodes? Explain construction and working of
b 7
glass electrode
c Write briefly the recycling of Li-ion battery by direct recycling method 6
OR
a Explain the construction, working and applications of Li-ion batteries. 6
b Explain the experimental determination of PH using glass 7
Q.2
Calculate the single electrode potential of Cu electrode at 27oC when the
c 7
standard potential of Cu is 0.34V and [ Cu2+] 0.1M
a Explain the following factors which affecting the rate of corrosion i) Ratio of 7
anodic and cathodic areas ii) nature of corrosion product
Q.3
b What is anodizing? Explain the process of anodizing of Al 6
What is electroless plating? Distinguish between electro and electroless
c 7
plating.
OR
What is meant by metal finishing? Mention (any five) technological
a 6
importance of metal finishing.
A thick steel sheet of area 400 cm2 is exposed to air near the ocean. After a
one year period it was found to experience a weight loss 375 g due to
Q.4 b 7
corrosion. If the density of the brass is 7.9g/cm2 calculate the corrosion
penetrating rate in mpy and mm/y ( given K= 534 in mpy and 87.6 in mm/y)
What is cathodic protection? Explain sacrificial anode and impressed
c 7
voltage methods of cahtodic protection
MODULE 3
What are polymer composites? Explain the synthesis and application of
a 7
Kevlar fibre
Q.5 What are conducting polymers? Explain the various factors influencing the
b 7
conduction in organic polymers.
c Briefly explain the carbon nanotubes with properties and applications. 6
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OR
a Explain optical and electrical properties of nanomaterials. 7
What are nanomaterials? Explain the synthesis of nanomaterials by
b 6
Q.6 precipitation method
What are Biodegradable polymers? Explain the properties and applications of
c 7
Polylactic acid.
MODULE 4
a Briefly explain any six basic principles of green chemistry. 6
b Explain the following i) Phase transfer catalyst ii) Solvent free reaction 7
Q.7
With a neat diagram explain the production of Hydrogen by Photocatalytic
c 7
method
OR
a Describe the hydrogen production by photo electrocatalytic method. 7
Explain the synthesis of Paracetamol by conventional and green route from
Q.8 b 7
phenol.
c Explain the construction and working of photovoltaic cells. 6
MODULE 5
a Explain the theory, instrumentation and applications of flame photometry. 7
b Write the principles and requirement of titrimetric analysis. 7
Q.9 In a COD test, 30.5 cm3 and 15.5 cm3 of 0.05 N FAS solutions were
c consumed for blank & sample titration respectively. The volume of test 6
sample used was 25 cm3. Calculate the COD of the sample solution.
OR
a Explain the determination of hardness by EDTA method. 7
Define the following units of standard solution.
Q.10 b 6
i) Molarity ii) Normality iii) ppm
c Explain the theory and instrumentation of potentiometry. 7
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Table showing the Bloom’s Taxonomy Level, Course Outcome and Program Outcome
Question Bloom’s Taxonomy Course Program Outcome
Level attached Outcome
Q.1 (a) L1, CO.1 PO-1,2,12
L2
(b) L2 CO.1 PO-1.2,12
(c) L2 CO.1 PO-1,2,12
Q.2 (a) L1 CO.1 PO-1,2,12
(b) L2 CO.1 PO1,2.12
(c) L3 CO.I PO-1
Q.3 (a) L2 CO.2 PO-1,2,12
(b) L2 CO.2 PO-1,2,12
(c) L2 CO.2 PO-1,2,12
Q.4 (a) L1 CO.2 PO-1,2,12
(b) L2 CO.2 PO1
(c) L2 CO.2 PO-1,2,12
Q.5 (a) L2 CO.3 PO-1,2,12
(b) L2 CO.3 PO-1,2,12
(c) L2 CO.3 PO-1,2,12
Q.6 (a) L2 CO.3 PO1,2,12
(b) L2 CO.3 PO-1,2,12
(c) L2 CO.3 PO-1,2,12
Q.7 (a) L2 CO.4 PO-1,2,12
(b) L2 CO.4 PO-1,2,12
(c) L2 CO.4 PO-1,2,12
Q.8 (a) L2 CO.4 PO-1,2,12
(b) L2 CO.4 PO-1,2,12
(c) L2 CO.4 PO-1,2,12
Q.9 (a) L2 CO.5 PO-1,2,12
(b) L2 CO.5 PO-1,2,12
(c) L3 CO.5 PO-1
Q.10 (a) L2 CO.5 PO-1,2,12
(b) L2 CO.5 PO-1,2,12
(c) L2 CO.5 PO-1,2,12
Lower order thinking skills
Bloom’s Remembering( Understanding Applying (Application):
Taxonom knowledge):𝐿1 Comprehension): 𝐿2 𝐿3
y Levels Higher order thinking skills
Analyzing (Analysis): 𝐿4 Valuating (Evaluation): 𝐿5 Creating (Synthesis): 𝐿6
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