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Chemistry

The document outlines the examination structure for a B.E. and B.Tech degree in Chemistry for April 2024, consisting of three parts: Part A with short answer questions, Part B with detailed explanations, and Part C with problem-solving and application-based questions. Each part assesses various learning outcomes related to chemistry concepts, including water hardness estimation, corrosion mechanisms, and spectroscopy applications. The exam duration is 3 hours and the maximum score is 100 marks.

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mohitiistjee2025
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23 views2 pages

Chemistry

The document outlines the examination structure for a B.E. and B.Tech degree in Chemistry for April 2024, consisting of three parts: Part A with short answer questions, Part B with detailed explanations, and Part C with problem-solving and application-based questions. Each part assesses various learning outcomes related to chemistry concepts, including water hardness estimation, corrosion mechanisms, and spectroscopy applications. The exam duration is 3 hours and the maximum score is 100 marks.

Uploaded by

mohitiistjee2025
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Name of the Candidate: Reg. No.

:
22CH130
B.E., B. TECH. DEGREE– APRIL 2024 –EXAMINATIONS
ALL BRANCHES
CHEMISTRY
Duration : 3Hours Maximum: 100 Marks

Answer All Questions


PART – A (10 x 2 = 20) CO Marks
A1. Explain why contribution of OH– and HCO3– ions together towards alkalinity of CO1 (2)
water sample is ruled out.
A2. Compare scale and sludge. CO1 (2)
A3. Define reverse Osmosis. CO2 (2)
A4. Describe hydrogen economy. CO3 (2)
A5. State pilling– Bedworth rule CO4 (2)
A6. Recall the terminology for shifts in absorption spectra. CO5 (2)
A7. Compare phosphorescence and fluorescence. CO5 (2)
A8. State Beer Lambert’s Law. CO5 (2)
A9. Why ceramics are brittle in nature. CO6 (2)
A10. Compare thermoplastic and thermosetting of polymer. CO6 (2)
PART – B (5 x 8 = 40) CO Marks
B1. Explain the working mechanism of zeolite process. CO2 (8)
B2. Describe hydrogen – oxygen fuel cell with neat diagram. CO3 (8)
B3. When two metals are dipped partially in conducting medium. Find the type of CO3 (8)
corrosion occur and describe its mechanism
B4. Sketch and label the various possible stretching and bending vibrations in poly CO5 (8)
atomic molecules.
B5. Summarize synthesis, properties and application of polymer composite. CO6 (8)
PART – C (4 x 10 = 40) CO Marks
C1. The sample water obtained from sugar manufacturing industry at alanganalluar in CO2 (10)
Madurai for hardness estimation. 50 ml of standard hard water containing 2 mg of
pure CaCO3 per 2 ml consumed 30 ml of EDTA solution. 50 ml of sample water
consumed 15 ml of EDTA. The 50 ml of sample water was boiled, cooled to room
temperature and filtered consumed 12 ml of EDTA solution in titration. Calculate
total, permanent and temporary hardness of water sample in CaCO3 Equivalence.
[OR]
C2. The huge amount of organic effluent discharged into water bodies from paper CO2 (10)
industry results enhancement of COD and BOD of water. Sketch waste water
treatment plant for the above industry to reduce the contaminant of water bodies.

C3. The smart phone manufacturing industry searching for battery with output voltage CO4 (10)
of 4 V and energy density of 150 wh/kg. Identify the appropriate battery and
explain its working mechanism.
[OR]
C4. Oil and gas refinery industry supply LPG gas from production place to houses CO4 (10)
through steel pipe buried in underground. The steel pipe encountered the
corrosion frequently results the risk of explosion. Find any two suitable techniques
to control the corrosion in steel pipe.

C5. Sketch proton Nuclear Magnetic Resonance (1H NMR) spectrometer. Explain the CO5 (10)
working principle of NMR and its application in characterization organic molecule
with suitable example.
[OR]
C6. The surface water was contaminated by various metals from industry. Find the CO5 (10)
appropriate spectroscopy to get concentration of metal elements present in it and
describe its working mechanism.

C7. If the ceramic material is to be employed in lining of furnace, what are properties CO6 (10)
has to be fulfilled.
[OR]
C8. Illustrate classification and size dependent properties of nanomaterial. CO6 (10)
***************

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