# Question Bank Solutions for BE Civil Engineering Semester 1 (FE First Year) - University of Mumbai

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When would solid lubricants are used?

[4] Lubricants
Chapter: [4] Lubricants
Concept: Lubricants

Define lubricants and lubrication. Mention the various mechanisms involved in lubrication of machine. Discuss boundary lubrication.

[4] Lubricants
Chapter: [4] Lubricants
Concept: Lubricants

What are plasticizers? Give its uses and examples.

[2] Polymers
Chapter: [2] Polymers
Concept: Introduction to Polymers

What are the functions of lubricants.

[4] Lubricants
Chapter: [4] Lubricants
Concept: Lubricants

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

[5] Phase Rule
Chapter: [5] Phase Rule
Concept: Gibb’S Phase Rule

What are lubricants ? Define lubrication .Explain Hydrodynamic lubrication mechanism with neat diagram .

[4] Lubricants
Chapter: [4] Lubricants
Concept: Lubricants

Distinguish between alkaline and non alkaline hardness?

[1] Water
Chapter: [1] Water
Concept: Hardness of Water

Witte the CVD method for preparation of carbon nanotubes.

[6.02] Nanomaterials
Chapter: [6.02] Nanomaterials
Concept: Nanomaterials > preparation (Laser and CVD) method

State the condensed phase role.

[5] Phase Rule
Chapter: [5] Phase Rule
Concept: Terms involved with examples of phase rule

Explain the term 'phase' with appropriate examples.

[5] Phase Rule
Chapter: [5] Phase Rule
Concept: Terms involved with examples of phase rule

Discuss the role of gypsum during the manufacturing of Ponland cement.

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

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.

[1] Water
Chapter: [1] Water
Concept: Hardness of Water

Explain CVD method for production of CNTs.

[6.02] Nanomaterials
Chapter: [6.02] Nanomaterials
Concept: Nanomaterials > preparation (Laser and CVD) method

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

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

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.

[1] Water
Chapter: [1] Water
Concept: Hardness of Water

Draw a neat, labelled diagram of the rotatory kiln.

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

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.

[1] Water
Chapter: [1] Water
Concept: Hardness of Water

Write a note on Ultrafiltration method for purification of water.

[1] Water
Chapter: [1] Water
Concept: Hardness of Water

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

[4] Lubricants
Chapter: [4] Lubricants
Concept: Mechanism of Lubrication

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

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