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What is fabrication of plastics? Explain the injection moulding method with the help of neat diagram.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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What is vulcanization? Explain giving proper reaction. Discuss the improvement in the drawbacks of natural rubber after vulcanization.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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Explain Compounding of plastics. (five ingredients).
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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Define cloud point and pour point. Discuss its significance.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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602
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Dishtinguish between thermoplastic and thermosetting resins.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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What is vulcanization? Explain with proper reaction. Mention the advantages of vulcanized process.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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Explain the zeolite method for softening of water including the folloing points. Diagrams, process with reaction, regenration with reactions.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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Setting and hardening of cement.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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Draw the phase diagram of one component water system. Explain triple point.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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663
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Distinguish between thermoplastics and thermosetting resins.
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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What is vulcanization? How does it improve the properties of rubber?
engineering chemistry updated 4.1 years ago by krithikkm200 • 10
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602
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Discuss the softening and regeneration reactions in the Ion-exchange process.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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1.5 g of an oil was saponified with 50ml of 0.1N KOH solution. After refluxing the mixture required 7.5ml of 0.1N HCL for neutralisation. Find the saponification value of oil.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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Name the various ingredigents used in the compounding of plastics and give two examples of each.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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Explain Chlorine with its advantages and disadvantages
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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492
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Discuss the mechanism of boundry film lubrication.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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608
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Write a note on Nickel-Hydrogen batteries.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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694
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What are plain carbon steels? What are their drawbacks?
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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What is the repeat unit structure of natural rubber? State any two drawbacks of natural rubber.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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632
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Write a note on compounding of plastic.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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Write chemical reactions for manufacturing of phenol formaldehyde resin. Explain its applications and properties also.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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List any five characteristics of a good lubricant with justification.
engineering chemistry updated 4.2 years ago by pg1118329 • 0
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Calculate all types of hardness of water sample containing: Ca(HCO3)2=81 ppm MgSO4=60 ppm, MgCO3=42 ppm, Ca(NO3)2=82 ppm.
engineering chemistry updated 4.2 years ago by krithikkm200 • 10
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1.5k
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Give the principle of estimation of hardness of water using EDTA method (only equations)
engineering chemistry updated 4.2 years ago by krithikkm200 • 10
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2.2k
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Write preparation, properties and uses of following polymers :- (i) Buna S (ii) Kevlar
engineering chemistry updated 4.2 years ago by krithikkm200 • 10
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