• Attempt any five questions.
• All questions carry equal marks.
What is Temporary and Permanent hardness water, How it is differentiate? Give suitable examples.
Write a note on scales and sludges.
Explain Ion-exchange process of water softening with neat diagram.
What are boiler troubles? How are they caused? Suggest steps for minimizing the boiler troubles.
Give short note on mechanism thick film of lubrication process.
Explain about flash and fire point and their significance.
What are polymers? Give their classification with examples.
Give preparation, properties and uses of Bakelite.
What is oxidation corrosion and how does it take place? Describe the mechanism of oxidation corrosion.
Explain water line corrosion and galvanic corrosion.
What is spectroscopy? Discuss about Ultra-violet spectroscopy principle, instrumentation and applications.
Write short notes on Electro negativity variation in groups and periods.
Explain about polarisability.
Write brief note on (Any two):
i) Alkalinity
ii) Emulsification number
iii) Conducting polymers
iv) Atomic and Ionic sizes
