Engineering FE Engineering Common Sem 2 Engineering Chemistry II May 2019 CBSGS Question Paper - Mumbai University | munotes

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Q1 Answer any five from the following: - [15 M]
- a) Differentiate between anodic and cathodic coatings
- b) What is the significance of proximate analysis of coal?
- c) Give Composition, Properties and Uses of Duralumin
- d) Mention any four properties of composite materials
- e) State any six principles in green chemistry
- f) What are the main constituents of paints?
- g) 2.5 g of the coal sample in a Bomb-calorimeter experiment gave 0.82g Calculate percentage of S in the coal sample
Q2 a) Explain the mechanism of following types of corrosion:- [06M]
- b) Write informative note on Fixed bed catalytic cracking. [05M]
- c) Calculate % Atom Economy for the following reaction [04M]
Q3 a)) A fuel sample has the following composition: H2=15%, CH4 =25%, C2H4 = 30%, CO = 15%, = 3%, and remaining nitrogen. Calculate the volume of oxygen and air required for complete combustion of 5 of fuel. [06M ]
- b) Explain Conventional and Greener route for synthesis of Indigo dye. Mention the
- c) Discuss the following factors influencing the rate of corrosion:
- 1) Nature of oxide film ii) Moisture [04M]
Q4 a) What are alloys? Explain the purpose of making alloys. [06M]
- b) What is the principle of cathodic protection? Explain any one protection method. [05M]
- c) Write note on ‘Particle reinforced composites’ [04M]
Q5 Write informative note on Biodiesel. [06M]
- b) What is powder metallurgy? Explain hot compaction method
- c) Write a note on dispersed phase of composite materials. [04M]
Q6 a) Define corrosion. Explain the mechanism of electrochemical corrosion in acids. [05M]
- b) A coal sample contains, C=70%, H= and remaining Ash. Calculate the GCV and NCV of given coal sample
- c) Write a note on:- [05M]

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