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Pollution Prevention and Waste Minimisation B. Find out the total hardness of water in ppm units, giving temporary and permanent hardness assuming the atomic mass of Fe to be 56, that of Ca to be 40, that of Mg to be 24 and that of Na to be What are the Constituents of petroleum?
Describe the Origin of petroleum. Give an account of production of petrol from crude oil. A producer gas has the following composition by volume.
Calculate the quantity of air re-quired per m3 of gas. Give one example for each class.
Write a note on the conditions leading to failure of a refractory material. Write a note on lubricants with special reference to their classification, mode of action, examples and applications.
What are the draw backs of raw rubber? How are its properties improved?
How is Buna — S Rubber prepared? Write its uses.
How is Buna — S Rubber prepared? Write its uses. What is alkalinity of water due to and how it is estimated? What is coal? How it is formed? Discuss the qualities of a good coal.
Give the Classification of coal and explain each class with example. With a neat diagram describe the orsat gas analysis method.
What are the special precaution to be taken in the measurement? Define calorific values of a fuel.
Distinguish gross and net calorific value. What are Refractories? Explain Thermal spalling, strength and porosity of the refractories. Explain the following two theories for the mechanism of the lubricants.