Engineering FE Engineering Common Sem 1 Applied Chemistry Dec 2019 CBSGS Question Paper - Mumbai University | munotes

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Q2 Answer any three questions from remaining five questions
Q3 Figures to the right indicate full marks
Q4 Atomic weight :
Q1 Attempt any five from the following : 15 marks
- a) Give the preparation, properties and uses of PMMA
- b) Why COD is greater than BOD?
- c) Define Viscosity Index and give its significance in lubrication
- d) Find out degree of freedom for the following equation :
- e) Write a note on concrete
- f) Define fabrication. Draw labelled diagram for injection moulding
- g) Calculate temporary and permanent hardness of water sample containing
Q2 a) sample on analysis gave the following data : Mg (NO, ), =26.9ppm. Calculate the lime (80% pure) and soda (85% pure) requirement in Kg for softening of 30,000 liters of water 6 marks
- b) What is reduced phase rule? Explain two-component lead- silver system with neat and labeled phase diagram 5
- c). Write a short note on laser method used in manufacturing of CNT. Define Lubricant. Explain thin film lubrication in detail. (06) 4
- b) is vulcanization? How it help to remove drawback of natural rubber? 5
- c) . Define triple point. Explain with example. 4
Q4 a) Explain the role of each constituent in compounding of plastics. 6 marks
- b) Explain following : 5
Q1 Chlorine treatment method for municipal water
- c) 20 ml of lubricating oil required 2.5 ml of 0.1N KOH for titration. Calculate acid value of a lubricating oil. (Density of oil = 0.81 gm/ml). From acid value state whether the oil is useful for lubrication or not 4
Q5 a) Define Portland cement. Name the raw materials and give composition of 6 marks
- b) Write a note on conducting polymer. 5
- c) An zeolite softener was completely exhausted and was regenerated by passing 8 liters of NaCl solution having strength 150g/L. If hardness of water is 170 ppm, then calculate total volume that can be softened by zeolite softener 4
Q6 a) Activated sludge process? Explain activated sludge process in detail. 6 marks
- b) Give preparation and uses of Kevlar and Urea formaldehyde resin. 5
- c) Explain following properties of lubricant with their significance (any two) : 4
- i) Oiliness tii) Cloud point and Pour point

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