Engineering Chemistry (BT-101) - Important Questions

Explain formation, composition, differences and disadvantages of sludge and scale in boilers.

Calculate temporary, permanent and total hardness of water in terms of CaCO3 equivalent from given concentrations of calcium and magnesium bicarbonates, chlorides and sulphates.

Describe the ion-exchange process for softening of water with neat diagram.

What is lime-soda process? Calculate the lime and soda requirement for softening a given volume of water from its impurity analysis.

What is a lubricant? Explain viscosity index and flash and fire points with neat diagrams.

Explain the preparation, properties and uses of Bakelite (phenol-formaldehyde resin).

Write a short note on synthetic rubber / elastomers with preparation, properties and uses of Buna rubbers.

Differentiate chain growth and step growth polymerization and explain free radical and ionic polymerization with examples.

Explain the water system with a neat labelled phase diagram, including areas, curves, and the significance of the triple point (and metastable curve).

What is oxidation (chemical) corrosion, how does it take place, and what is its mechanism?

State and explain Beer-Lambert's law.

Explain what is spectroscopy / electronic spectroscopy and discuss UV spectroscopy principle / electronic transitions, instrumentation and applications.

Explain the lime-soda process for softening of hard water and its advantages.

Explain the mechanism of thick-film (fluid-film / hydrodynamic) lubrication.

Determine type and extent of alkalinity in terms of CaCO3 equivalent from acid titration to phenolphthalein and methyl orange end points.

Explain the trends in electronegativity, ionic size and electron affinity of s- and p-block elements in groups and periods with reasons.