Answer / nihar ranjan

Dross is a mass of solid impurities, which forms during smelting of low-melting point metals viz, Aluminium, Tin, Lead . As metal is melted, it oxidizes, forming a layer of scum and impurities which float to the surface as the metal heats up.

Scaling is mainly due to the presence of calcium and magnesium salts (carbonates or sulphates), which are less soluble hot than cold, or to the presence of too high concentration of silica.

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3 Answers   Alpha Technologies, HPCL, Safran,

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An employ has after increment has Gross Salary 22000 rupees per month. Earlier he was covered in ESI . now should we deduct ESI from his salary or not.

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Im studing engineering, i wanna do MBA ftr engineering Is there any scope f doin mba ftr engineering??

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How will you classify sliding contact?

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Where can you find the feed check valve and feed stop valve and give the purpose of it?

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9 Answers   Ford,

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