BE Mechanical Engineering सत्र १ (इंजीनियरिंग) - University of Mumbai Question Bank Solutions for Applied Chemistry 1

1.4 gm of oil required 1.8 ml of 0.01N KOH for neutralization. Calculate the acid value and mention whether the oil is suitable to be used or not.

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)

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 meant by Fabrication of plastics? Explain injection moulding with the help of neat diagram .

Discuss the treatment of water using bleaching powder

Define Moulding. List the different techniques of moulding. Explain injection moulding with the help of neat diagram.

What is fabrication of plastic ? Explain injection moulding process with a neat diagram .

Write a short note on Reverse Osmosis .

Define flash and fire points.

What is oiliness? What is its importance in lubrication?

Define Cloud point and Pour point of a lubricant.

Define the Flash point.

Define the Oiliness .

Define the Pour point .

Distinguish between BOD and COD. 

Define Oiliness. What is its significance {

Define flash point and fire point? Give its significance.

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)

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