Engineering FE Engineering Common Sem 1 Applied Chemistry Dec 2018 CBSGS Question Paper - Mumbai University | munotes

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Older exam Dec 2018 - R16 Semester-end · Applied Chemistry → Newer exam May 2019 - R16 Semester-end · Applied Chemistry →

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Q2 Answer any three questions from remaining five questions
Q3 Figure to the right indicate full marks
Q1 Attempt any five from the following: 15 marks
- a) Explain the principal of EDTA method
- b) Explain vulcanization of rubber
- c) Define lubricant and give its functions
- d) State Gibb’s phase rule and define phase
- e) What are nano materials?
- f) Distinguish between thermoplastics and thermosetting plastics
- g) 20 ml of sewage water is refluxed with 0.1N in presence of and The unreacted dichromate required 6ml of 0.1N FAS solution Blank titration consumed 15ml of 0.1N FAS solution. Calculate COD of
Q2 a) Calculate the quantity of lime (90% pure) and (80% pure) required to 6 marks
- b) With the help of phase diagram explain one component system. 05
- c) Describe laser method of preparation of CNT’s. 04
Q3 a) Define lubrication. Discuss the boundary film lubrication mechanism. Write short note on injection moulding process. 05 6 marks
- c) State the limitations of phase rule. 04
Q4 a) Give the preparation, properties and uses of (any two) 6 marks
- b) With the help of neat and labelled diagram explain zeolite process. 05
- c) 5ml of an oil takes 2.1ml of 0.02N KOH for titration. Find its acid value. 04
Q5 a) Write short notes on 6 marks
- i) Decay of concrete
- ii) RCC
- b) Write short note on ‘Conducting Polymer.’ 05
- c) The hardness of 10,000 litres of Hard water was removed by passing through 04 zeolite. Zeolite required 5000 litres of NaCl solution containing NaCl litre. Determine the hardness of water sample
Q6 a) With the help of flow sheet diagram explain activated sludge process. 6 marks
- b) Write notes on 05 Polymers in medicine and surgery
- c) Explain the following properties of lubricants with significance. 04
- i) Flash point and Fire point Cloud point and pour point

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