MU Applied Chemistry 1 - December 2016 Exam Question Paper

MU First Year Engineering (Semester 1)
Applied Chemistry 1
December 2016

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Solve any five questionQ.1(a,b,c,d,e,f,g)

1(a) define BOD and COD.

3 M

1(b) What are the drawbacks of natural rubber?

3 M

1(c) Distinguish between thermoplastic and thermosetting resins.

3 M

1(d) Define cloud point and pour point. Discuss its significance.

3 M

1(e) What are nano materials? Explain any two methods for synthesis of Nanoparticles.

3 M

1(f) List the applications of CNTs.

3 M

1(g) 25 ml of a seawage water sample was refluxed with 10ml of 0.25Nk₂Cr₂ON solution in presence of dil H₂ SO₄Ag₂SO₄ and HgSO₄. The unrea cted dichromate required 5.5 ml of solution, under the same conditions. Calculate the COD of sewage water sample.

3 M

2(a) Calculate the amount of lime (85% pure) and soda (95% pure) required to soften one millon litres of water which contains MgCO₃=84 ppm, CaCl₂ =22.2 ppm MgCl₂=9.5 ppm, CO₂=33 ppm HC³l=7.3 ppm, kCl=-16.8 ppm.

6 M

2(b) State Gibb's phase rule . Give its applications to one component system.

5 M

2(c) What are the CNTs? Describe the laser method of preparation of CNT.

4 M

3(a) Define lubricant. Discuss the boundary film lubrication mechanism.

6 M

3(b) Explain compounding of plastics.(any five)

5 M

3(c) State the limitation of phase rule.

4 M

4(a) Give the preparation, and uses of (any two)
i) PMMA ii) Buna-s iii) Kevlar

6 M

4(b) With the help of neat and labelled diagram explain zeolite process for softening of water.

5 M

4(c) Find the acid value of oil whose 5 ml required 2ml. Of 0.01 N KOH during titration.(density of the oil=0.92)

4 M

5(a) Explain manufacturing of portland cement (wet process) with a labelled diagram of rotary kiln.

6 M

5(b) Explain the injection moulding method with the help of a neat diagram.

5 M

5(c) The hardness of 50,000 litres of water sample was removed by passing it through a zeolite softner. Then it required 200 litres of of NaCl soltution Calculate the hardness of water sample.

4 M

Solve any Two questionQ.6(i,ii,iii)

6(a)(i) Discuss the following treatment methods for municipal water.
Bleaching powder

3 M

6(a)(ii) Ozone

3 M

6(a)(iii) Chlorine

3 M

6(b) Discuss any two of the following:
i) Glass transition temperature
ii) Polymer in medicine and surgery
iii) Conducting polumers

5 M

6(c) Write a note on blended oil.

4 M

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