ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & sCIENCES UGC AUTONOMOUs (Permanently Afiliated to Andhra University, Approved by AICTE, Aceredited by NBA & NAAC with'A' Grade) SANGIVALASA -531 162, BHEEMUNIPATNAM MANDAL, VISAKHAPATNAM DT. NANAM BRA ANITS Date: 15-04-2021 1/IV B.TECH I-SEMESTER REGULAR EXAMINATIONS: MAY-2021 REGULATION: R20 DATE, DAY & TIME CHEMICAL CIVIL ECE IT EEE MECH CSE 06/05/2021 Engineering Engineering Engineering Mathematics I Engineering Engineering Engineering Engineering (Thursday) 10.00 AM-12.40 PM Mathematics I Mathematics I Mathematics I Mathematics I Mathematics I Mathematics 08/05/2021 Communicative Communicative Engineering Physics Engineering Physics Communicative Engineering Physics Engineering Physics (Saturday) 10.00 AM-12.40 PM English English English 10/05/2021 Engineering Chemistry Basic Electronics Basic Electronics Engineering Chemistry Engineering Chemistry Engineering Chemistry Basic Electronics (Monday) 10.00 AM-12.40 PM Engineering Engineering 12/05/2021 Problem solving with| Problem solving with C Problem solving Engineering Graphics Engineering Graphics Engineering Graphics Engineering Graphics with C (Wednesday) 10.00 AM-12.40 PM C 14/05/2021 Introduction to Principles of Fundaments of Building Technolog9y Digital Logic Design Digital Logic Design Chemical Electrical Information (Friday) 10.00 AM-12.40 PM Engineering Engineering Technology is|u12o2) PRINCIPAL (Prof.T.V Hanumantha Rao) CONTROLLER OF EXAMINATIONS (Prof. N.V.N Indra KIran) Dean & cOE ANITS Sangivalasa Visakhepatnam TIneiPal Anil Neerukonda Institute o Tech:.ology & Sciences Sangivalasa-53! 162 16akhapatnan Dis
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ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & sCIENCES UGC AUTONOMOUs
(Permanently Afiliated to Andhra University, Approved by AICTE, Aceredited by NBA & NAAC with'A' Grade) SANGIVALASA -531 162, BHEEMUNIPATNAM MANDAL, VISAKHAPATNAM DT. NANAM BRA
14/05/2021 Professional Professional Professional Engineering
Drawing Engineering
Drawing Engineering
Drawing Engineering
Drawing Ethics & Human Ethics& Human Ethics & Human
(Friday) 10.00 AM- 12.40 PM
Values Values Values
ulot)
PRINCIPAL (Prof.T.V Hanumantha Rao)
Principal Anil Neerukonda institute o
Technology & Sciences
Sangivalasa-531 162
iaakiDatnan Dis'
cONTROLLER OF EXAMINATIONS (Prof. N.v.N Indra KIran)
Dean& cOEANITS
Sangivaleea Viakhapatnam
Model Question Paper ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & SCIENCES
(AUTONOMOUS)I/AV B.Tech I Semester Regular & Supplementary Examinations
Time: 2 hrs 40 minutes Max Marks: 4x15M=60M Answer ANY FOUR Questions one question from each Unit
All Questions Carry Equal Marks (15 marks)
All parts of the questions must be answered at one place only.
Q. No. Questions Marks CO| BL UNIT -I
Define hardness? Explain the disadvantages of hard water while used for domestic, industrial and Steam generation
1) a) 7M CO L2
purpose. 1) b) Explain the different internal treatment methods for prevention 8M CO1| L3
of scales in boilers? Mention the advantage of calgon conditioning over phosphate conditioning.
OR
2) a) CO1 L2 Calculate the temporary, permanent and total hardness of a water sample
Mg(HCO3)2-7.3 CaSO4-13.6and MgCl2=9.5 mg/L. Is the water sample is
suitable for high pressure boilers or not. Describe the process of water softening by demineralizationprocess with a neat sketch. Comment on suitability of this process when such soften water is used in high pressure
boilers.
7M
containing the
mg/L, following
Ca(HCO)2-16.2 parameters:
mg/L,
2) b) 8M CO1 L3
UNIT -II 3) a) Discuss electrochemical series in detail with its applications? 7M CO2 L2
Explain the construction and working of hydrogen-oxygenfuel cell? What are the advantages of fuel cells over other
cells?
3) b) 8M CO2L2
OR 4) a) What is a photovoltaic cell? Mention its applications. 7M Co2 L2
4) b) Define reference electrode? Describe the construction and 8M CO2 L2 working of calomel electrode with neat sketch?
UNIT-III 5) a) Compare and exemplify galvanic corrosion and concentration 7M CO3 L3
cell corrosion.
5) b) What is electrochemical corrosion'? Describe its mechanism by hydrogen evolution and oxygen absorption?
M CO3 L2
OR
CO3 L3 Comment on the use of aluminum in place of zinc for cathodic protection of iron from rusting?
6) a) 7M
6) b) What are the objectives of electroplating? Explain Nickel 8M C03 L2
Plating? UNIT-IV
What are organie semiconductors? Give examples and their 7) a) 7M CO4 LI
uses?
7) b) What is doping? Explain the role of n-type and p-type dopants 8M C04 L2
on band structures?
OR 8) a) List out the engineering applications of ceramics? 7M C04 LI
8) b) 8M C04 L2 Explain the chemical reactions involved in setting and
hardening of cement??
UNIT-V 9) a) How is the chemical synthesis of nanoparticles done by Sol- 7M CO5 L2
Gel process?
9) b) Describe principle and working of Scanning Electron 8M CO5 L3
Microscope wit neat sketch.
OR
10) a) Which properties of Smart polymers make them to select for sensor applications and mention their types?
7M CO5 L2
COS L3 10) b) Compare different types of composites materials with their salient properties and give their applications?