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Applied Chemistry 1 CBCGS 2017-2018 BE Automobile Engineering Semester 1 (FE First Year) Question Paper Solution

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Applied Chemistry 1 [CBCGS]
Marks: 60Academic Year: 2017-2018
Date: December 2017

1). Question No . is  compulsory .

2) Answer any three questions from the remaining five . 


[15]1
[3]1.a

Distinguish between BOD and COD. 

Concept: Bod - Definition and Significance
Chapter: [1] Water
[3]1.b

Give the preparations, properties and uses of Kevlar. 

Concept: Preparation, properties and uses of Kevlar
Chapter: [2] Polymers
[3]1.c

Calculate the total hardness in ppm in given water sample.
: 50ml of standard hard water , containing 1mg pure CaCO3 per ml consumed 20ml EDTA solution.
: 50ml of water sample consumed 30ml EDTA solution using EBT indicator.

Concept: Hardness of Water
Chapter: [1] Water
[3]1.d

Define flash point and fire point? Give its significance.

Concept: Definition and significance of - Viscosity
Chapter: [4] Lubricants
[3]1.e

State the number of phases I component for the following equilibrium 

i) H2O(s) ↔ H20(l) ↔ H20(g) 
ii)Mixture of Rhombic and monoclinic sulphur.

Concept: One Component System (Water)
Chapter: [5] Phase Rule
[3]1.f

What are plasticizers? Give its uses and examples.

Concept: Introduction to Polymers
Chapter: [2] Polymers
[3]1.g

Write a brief note on CNTs.

Concept: Nanomaterials - properties and uses of CNTS
Chapter: [6.02] Nanomaterials
[15]2
[6]2.a

Calculate the quantity of the pure lime and soda required for softening of 1,00,000 litres of water containing the following impurities in ppm. The purity of lime is 70% and soda is BS% Ca(HCO3) = 30.2 , Mg(HCO3) = 20.8 ,CaCI2 = 28.1 ,MgCl2 = 8.78, CaSO= 35, MgSO4 = 6.7 .

Concept: Softening of water by Hot and Cold lime Soda method and numerical problems
Chapter: [1] Water
[5]2.b
[3]2.b.i

Distinguish between thermoplastic and thermosetting resins. ?

Concept: Thermoplastic Plastic
Chapter: [2] Polymers
[2]2.b.ii

What are the functions of lubricants.

Concept: Lubricants
Chapter: [4] Lubricants
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[4]2.c

What is Decay of concrete? Discuss its prevention. 

Concept: Cement - RCC and Decay
Chapter: [6.01] Cement
[15]3
[6]3.a

Define Fabrication. List the methods used. Discuss extrusion moulding in detail.

Concept: Fabrication of plastic by Extrusion moulding
Chapter: [2] Polymers
[5]3.b
[3]3.b.i

What are the limitations of Phase rule?

Concept: Advantages and Limitations of Phase Rule.
Chapter: [5] Phase Rule
[2]3.b.ii

Draw a neat, labelled diagram of the rotatory kiln.

Concept: Cement - Manufacture of Portland Cement
Chapter: [6.01] Cement
[4]3.c

15000 litres of hard water was passed through a zeolite softener. The exhausted zeolite required 120 litres of NaCI having stream of 30g/l of NaCL Calculate the hardness of water.

Concept: Hardness of Water
Chapter: [1] Water
[15]4
[6]4.a

What is activated sludge? How is the process carried out for treatment of waste water? Explain with a flow sheet diagram.

Concept: Sewage Treatment
Chapter: [1] Water
[5]4.b
[3]4.b.i

20ml of lubricating oil was dissolved in alcohol The solution was titrated against 0.1 N KOH solution. At the end point the burette reading was found to be 2. 5ml calculate the acid value of the oil.  ( density of oil= 0.86 g/ml)

Concept: Additives in blended Oils
Chapter: [4] Lubricants
[2]4.b.ii

Distinguish between the dry and wet process for manufacturing of Portland cement.

Concept: Cement - Manufacture of Portland Cement
Chapter: [6.01] Cement
[4]4.c

List the uses of polymer in medicine and surgery.

Concept: Polymers in Medicine and Surgery
Chapter: [2] Polymers
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[15]5
[6]5.a | Write notes on (any two)
[3]5.a.i

Giass transition temperature 

Concept: Effect of heat on the polymers (Glass transition temperature)
Chapter: [2] Polymers
[3]5.a.ii

Write a brief note on conducting polymers.

Concept: Conducting Polymers
Chapter: [2] Polymers
[3]5.a.iii

Vulcanisation

Concept: Rubbers - Compounding of Rubber (Vulcanization of Rubber)
Chapter: [2] Polymers
[5]5.b
[3]5.b.i

Discuss the treatment of water using bleaching powder

Concept: Drinking Water Or Municipal Water
Chapter: [1] Water
[2]5.b.ii

Explain the mechanism of Extreme pressure lubrication.

Concept: Mechanism of Lubrication
Chapter: [4] Lubricants
[4]5.c

What is reduced phase rule"? Draw the phase diagram of the Ag-Pb system with proper labelling.

Concept: Two Component System (Pb- Ag)
Chapter: [5] Phase Rule
[15]6
[6]6.a

What are the conditions for use of solid lubricants? Discuss the structure and uses of Graphite.

Concept: Lubricants - Solid Lubricants S (Graphite and Molybdenum Disulphide )
Chapter: [4] Lubricants
[5]6.b
[3]6.b.i

Discuss triple point in one component system

Concept: One Component System (Water)
Chapter: [5] Phase Rule
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[2]6.b.ii

Explain reverse osmosis

Concept: Drinking Water Or Municipal Water
Chapter: [1] Water
[4]6.c

Write a note on fullerene.

Concept: Nanomaterials - Fullerene - properties and uses
Chapter: [6.02] Nanomaterials

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