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Question Paper Solutions for Applied Chemistry 1 CBCGS 2016-2017 BE Chemical Engineering Semester 1 (FE First Year)

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Applied Chemistry 1
CBCGS
2016-2017 June
Marks: 60

Please check whiether you have got the right question paper.

N.B (1) Question No.1 is compulsory.

(2) Attempt any three question from the remaining questions.

(3) All questions carry equal marks.

(4) Atomic weights : [Ca= 40 C= 12. 0=16. H=1.Mg=24. S=32 CI = 35.5]


[15]1
[3]1.a

What are cation and anion exchangers?

Chapter: [1] Water
Concept: Ion Exchange Process and Numerical Problems
[3]1.b

Give the preparation, properties and uses of polymethyl methacrylate polymer.

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

A 10ml of sample of waste water was refluxed with 20ml of potassium dichromate solution and after refluxing the excess unreacted dichromate required 36.2ml of 0. 1M FAS solution. A blank of 1Om/ of distilled water on refluxing with 20ml of dichromate solution required 46ml of 0. 1M FAS solution. Calculate the COD value of waste water.

Chapter: [1] Water
Concept: COD- Definition and Significance
[3]1.d | Define:
[1]1.d.1

Define the Flash point.

Chapter: [4] Lubricants
Concept: Definition and significance of - Viscosity
[1]1.d.2

Define the Oiliness .

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

Define the Pour point .

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

What is reduced phase role?

Chapter: [5] Phase Rule
Concept: Reduced Phase Rule
[3]1.f

What are the draw backs of natural rubber?

Chapter: [2] Polymers
Concept: Natural Rubber- Latex
[3]1.g

Explain CVD method for production of CNTs.

Chapter: [6.02] Nanomaterials
Concept: Nanomaterials - preparation (Laser and CVD) method
[15]2
[6]2.a

Calculate the amount of lime {80 %purity) and soda {90% purity) required for softening of 50,000 of hard water whose chemical analysis results are given below. Ca(HCO3 ) = 40.5 mg/L, Mg( HCO3)2 = 73.0 mg/L, MgSO4 = 60.0 mg/L, CaSO4 = 34.0 mg/L, CaCl2 = 27.5 mg/L and NaCI = 20.0 mg/L.

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

Write a brief note on conducting polymers.

Chapter: [2] Polymers
Concept: Conducting Polymers
[2]2.b.2

Mention the conditions under which semi-solid lubricants can be used

Chapter: [4] Lubricants
Concept: Lubricants - Solid Lubricants S (Graphite and Molybdenum Disulphide )
[4]2.c

Explain with the help of chemical reactions 'setting and hardening' process of cement.

Chapter: [6.01] Cement
Concept: Cement - Setting and Hardening of Portland Cement
[15]3
[6]3.a | Write a short note on:
[3]3.a.1

Write a short note on Injection moulding method for plastic.

Chapter: [2] Polymers
Concept: Thermosetting plastic
[3]3.a.2

List the uses of polymer in medicine and surgery.

Chapter: [2] Polymers
Concept: Polymers in Medicine and Surgery
[5]3.b
[3]3.b.1

Draw and explain important features of phase diagram of water system.

Chapter: [5] Phase Rule
Concept: One Component System (Water)
[2]3.b.2

Mention the Raw material of Portland cement along with their percentage composition.

Chapter: [6.01] Cement
Concept: Cement - Chemical Composition and Constitution of Portland Cement
[4]3.c

Ten thousand litres of hard water was made soft with zeolite. The exhausted zeolite required a total amount of 8 lit of NaCl solution containing 150 gm per litre for regeneration. Calculate the hardness of water.

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

Explain lon-exchange process for Softening of hard water. What are its advantages and disadvantages.

Chapter: [1] Water
Concept: Ion Exchange Process and Numerical Problems
[5]4.b
[3]4.b.1

9ml of oil is taken from machine and it requires 1.5ml of 0.04 N KOH. Find acid value( density= 0.81 g/ml)

Chapter: [4] Lubricants
Concept: Definition and significance of - Viscosity
[2]4.b.2

Write a note on Deccay of Concrete.

Chapter: [1] Water
Concept: Softening of water by Hot and Cold lime Soda method and numerical problems
[4]4.c

What are the additives mixed with plastics for its compounding? Explain their functions.

Chapter: [2] Polymers
Concept: Compounding of Plastic
[15]5
[6]5.a
[3]5.a.1

Distinguish between thermoplastic and thermosetting resins. ?

Chapter: [2] Polymers
Concept: Thermoplastic Plastic
[3]5.a.2

Write a note on Visco-elastic state.

Chapter: [2] Polymers
Concept: Viscoelasticity
[5]5.b
[3]5.b.1

Write a note on Ultrafiltration method for purification of water.

Chapter: [1] Water
Concept: Hardness of Water
[2]5.b.2

What are the functions of lubricants.

Chapter: [4] Lubricants
Concept: Lubricants
[4]5.c

What is the mathematical form of the Gibbs phase rule equation? Explain the meaning of each one of the term involved in it.

Chapter: [5] Phase Rule
Concept: Gibb’S Phase Rule
[15]6
[6]6.a

What is lubrication? Explain the mechanism of fluid film lubrication.

Chapter: [4] Lubricants
Concept: Mechanism of Lubrication
[5]6.b
[3]6.b.1

What is meant by Triple point? Apply phase rule and find degree of freedom for triple point.

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

Distinguish between temporary and permanent hardness of water.

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

Describe the wet process for manufacture of Portland cement.

Chapter: [6.01] Cement
Concept: Cement - Manufacture of Portland Cement

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