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

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Older exam Dec 2019 - R16 Semester-end · Engineering Chemistry II → Newer exam 2022 - Summer Semester-end · Engineering Chemistry II →

Questions asked in this paper

Q2 All questions carry equal marks
Q3 Answer any Three questions from remaining Five questions
Q4 Atomicweights:(Ca=40
Q1 Answer any FIVE from the following 15 marks
- a) Define Corrosion. List the types of corrosion
- b) Define Fuel. Give the characteristics of good fuel
- c) Give composition, properties and uses of Gun Metal
- d) What are green Solvents? Give two industrial applications of green solvents
- e) Give classification of composite material
- f) What is metal cladding? How is obtained?
- g) 2.55 gm. Of coal was heated in kjeldahl’s flask and ammonia gas evolved was absorbed in 50 ml of 0.5 N excess acid required 40 ml of KOH for neutralization Calculate the % of Nitrogen in the coal sample
Q2 a) Explain the following factors affecting the rate of corrosion:- Relative areas of Anode and Cathode 6 marks
Q1 the medium
- b) Explain refining of petroleum with suitable diagram. 5
- c) Calculate % Atom Economy for the following reaction with respective Allylchloride. 4
- a) A gaseous fuel has the following Composition by volume: H2=10%, CO2=16%, O2=8% the volume of air required for complete combustion of this gas 6
- b) Explain conventional and Greener route for synthesis of Adipic acid. Highlights the green 5
- c) Explain inter-granular corrosion with suitable diagram. 4
Q4 a) Alloy Steel? Explain special effects of the following metals on properties of alloy 6 marks
- b) What is metallic coating? Distinguish between Galvanizing and Tinning 5
- c) Explain Laminar composite with suitable example 4
Q5 What is meant by knocking in Internal combustion engine? Define Octane and Cetane Number. Name any two antiknock agents 6 marks
- b) Write short note on following :- 5
Q1 Compaction Sintering
- c) Define matrix phase of composite materials. State functions of matrix phase. 4
Q6 a) Witha suitable diagram explain electrochemical mechanism of rusting of Iron in neutral 5 marks
- b) sample was found to contain the following composition by weight: -- Ash=4%.Calculate the minimum amount of air required for complete combustion of 2 kg of coal 5
- c) 1) Distinguish between Brass and Bronze Give composition and uses of the Duralumin (02) 3

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