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Applied Chemistry 2 CBCGS 2016-2017 BE Biomedical Engineering Semester 2 (FE First Year) Question Paper Solution

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Applied Chemistry 2 [CBCGS]
Marks: 60Academic Year: 2016-2017
Date: June 2017

1) Question No. 1 is compulsory

2) Attempt any 3 questions from Q. No. 2 to Q. No. 6


[15]1 | Answer any five of following:
[3]1.a

Gold does not get corroded due to oxidation. Why?

Concept: Factors Affecting the Rate of Corrosion- Nature of Metal
Chapter: [6] Corrosion
[3]1.b

Give the composition,propoerties and uses of Duralumin.

Concept: Non-ferrous Alloys - Composition, Properties and Uses Of- Alloys of Aluminium
Chapter: [7] Alloys
[3]1.c

Define octane number

Concept: Petrol
Chapter: [8] Fuels

Define cetane number.

Concept: Petrol
Chapter: [8] Fuels
[3]1.d

Give classification of composite materials.

Concept: Classification of Composite Materials
Chapter: [9] Composite Materials
[3]1.e

List any Six principles of Green Chemistry.

Concept: Green Chemistry - Twelve Principles of Green Chemistry
Chapter: [10] Green Chemistry
[3]1.f

Explain the advantages of galvanizing over tinning.

Concept: Types of Electrochemical Corrosion- Galvanic Cell Corrosion
Chapter: [6] Corrosion
[3]1.g

A coal sample contains C=70%, O=23%, H=5%, N=0.4%, Ash=0.1%. Calculate GCV and NCV of the fuel.

Concept: Solid Fuels - Analysis of Coal
Chapter: [8] Fuels
[15]2
[6]2.a

Explain the following factor affecting the rate of corrosion:
Relative areas of anode and cathode.

Concept: Factors Affecting the Rate of Corrosion Relative Area of Anodic and Cathodic Parts
Chapter: [6] Corrosion

Explain the following factor affecting the rate of corrosion: 
Purity of Metal

Concept: Factors Affecting the Rate of Corrosion Purity of Metal
Chapter: [6] Corrosion

Explain the following factor affecting the rate of corrosion: Effect of pH

Concept: Factors Affecting the Rate of Corrosion Influence of Ph
Chapter: [6] Corrosion
[5]2.b
[3]2.b.i

0.5gm of coal sample was burnt in Bomb Calorimeter experiment produced 0.06gm of BaSO4. Calculate percentage of sulphur.

Concept: Solid Fuels - Analysis of Coal
Chapter: [8] Fuels
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[2]2.b.ii

What is supercritical CO2?Give one application of it.

Concept: Green Solvents
Chapter: [10] Green Chemistry
[4]2.c

Write a note on sandwich panel type layered composites.

Concept: Classification of Composite Materials - Structural Composites
Chapter: [9] Composite Materials
[15]3
[6]3.a

With neat and labeled diagram explain fixed bed catalytic cracking.

Concept: Types of Cracking - Catalytic Cracking
Chapter: [8] Fuels
[5]3.b
[3]3.b.i

Write short note on atomization.

Concept: Powder Metallurgy - Methods of Powder Metal Formation
Chapter: [7] Alloys
[2]3.b.ii

What is pigment?

Concept: Organic Coatings
Chapter: [6] Corrosion

Give two functions of pigment.

Concept: Organic Coatings
Chapter: [6] Corrosion
[4]3.c

Calculate the percentage atom economy for the following reaction.
CH3NH2+COCL2 →CH3N=C=O+2HCL

Concept: Numerical on Atom Economy
Chapter: [10] Green Chemistry
[15]4
[6]4.a

Explain with the help of diagram wet corrosion in neutral medium.

Concept: Numerical on Atom Economy
Chapter: [10] Green Chemistry
[5]4.b
[3]4.b.i

Explain the green chemistry principle “prevention of waste”.Explain the green chemistry principle “prevention of waste”.

Concept: Green Chemistry - Twelve Principles of Green Chemistry
Chapter: [10] Green Chemistry
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[2]4.b.ii

Write a note on ‘Matrix phase’ of composite material.

Concept: Composite Materials
Chapter: [9] Composite Materials
[4]4.c

Mention four drawbacks of plain carbon steel.

Concept: Plain Carbon Steel
Chapter: [7] Alloys
[15]5
[6]5.a

Calculate weight of air needed for complete combustion of 2kg of coal containing C=70%, H=10%, O=10%, N=5% and remaining ash.

Concept: Combustion
Chapter: [8] Fuels
[5]5.b
[3]5.b.i

Explain the method of impressed current cathodic protection.

Concept: Cathodic Protection Impressed Current Method
Chapter: [6] Corrosion
[2]5.b.ii

Give two purposes of alloying.

Concept: Purpose of Making Alloys
Chapter: [7] Alloys
[4]5.c

Explain conventional and green route of manufacturing of Adipic acid.

Concept: Conventional and Green Synthesis of Adipic Acid
Chapter: [10] Green Chemistry
[15]6
[6]6.a

What is compaction in powder metallurgy?

Concept: Powder Metallurgy
Chapter: [7] Alloys
[5]6.b
[3]6.b.i

Mention the characteristic properties of composite materials.

Concept: Composite Materials - Characteristic properties of composite materials
Chapter: [9] Composite Materials
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[2]6.b.ii

Distinguish between Cathodic Protection and Anodic Protection.

Concept: Cathodic Protection Anodic Protection Method
Chapter: [6] Corrosion
[4]6.c

Define fuel.

Concept: Fuels
Chapter: [8] Fuels

Give the characteristics of good fuel.

Concept: Fuels
Chapter: [8] Fuels
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