Engineering Materials
Thermoplastic materials are those materials which

Are flexible and can withstand considerable wear under suitable conditions
Do not become hard with the application of heat and pressure and no chemical change occurs
Are used as a friction lining for clutches and brakes
Are formed into shape under heat and pressure and results in a permanently hard product

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Engineering Materials
Smelting is the process of

All of these
Reducing the ore with carbon in the presence of a flux
Removing the impurities like clay, sand etc. from the iron ore by washing with water
Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns

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Engineering Materials
Inconel contains

65% nickel, 15% chromium and 20% iron
80% nickel and 20% chromium
68% nickel, 29% copper and 3% other constituents
80% nickel, 14% chromium and 6% iron

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