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An elastomer is a polymeric substance obtained after vulcanization of rubber. Vulcanization is the process of improving the properties of rubber by heating with sulphur. A normal rubber is not useable as it becomes brittle at low temperature and sticky at high temperature. Charles Goodyear had been trying to 'cure' the rubber so that it could be used in all seasons. He tried to mix all kinds of things such as ink, black pepper, cheese and what not. But he couldn't succeed until he dropped a piece of rubber on stove accidentally.
To his surprise, he found that instead of melting the rubber piece hardened and remained pliable. It was found in the lab that it contained traces of sulphur. Goodyear perfected the process and named it 'vulcanization' after the Roman God of fire, 'Vulcan'.
Purpose of plane table
Explain the Conventional Incineration and Refuse-Derived Fuel Facilities? 1. Conventional (Mass-Fired) Incineration most common form of municipal solid waste (MSW) incin
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Define the Arrow Diagramming Method Activity-on-Arrow (Branch) with nodes as dependencies Uses finish-to-start precedence only. The solution method for an activity on
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design of treatment plant
Q. Explain P Trap? Trap is a depressed or bent sanitary fittings which always remains full of water it is water seal. Its functions are to prevent passage of foul air or gas
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