BE Chemical Engineering सत्र १ (इंजीनियरिंग) - University of Mumbai Important Questions

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)

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)

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

Explain the mechanism of Extreme pressure lubrication.

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

Write the significance of the following properties of lubricants.
i)Emulsification ii)Cloud point  iii)Fire point

Name two additives added in blended oils .Give one example of each .

Find the acid value of the given oil whose 20 ml required 2.8 ml of N/10 KOH during titration .( Density of oil =0.86 g/ml )

What is grease ? What are the conditions in which greases are used ?

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

State the limitations of phase rule?

State the condensed phase role.

What is the application of phase rule to one component water system? Explain with the help of diagram.

Define phase ,component and degree of freedom.

Explain the term 'phase' with appropriate examples.

What is reduced phase role?

Discuss the application of Phase rule to the one component system based on: Diagram ,  triple point

What is reduced or condensed phase rule.

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

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.