Which liquid would oyu use to dissolve gold?

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How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? Define what is the ratio of dbc to oxalic acid solution in this step?

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You are required to calculate a heat affected zone in weld. How would you do that?

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carbon-3.23%,manganese-0.60%,silicon-2.25%,sulphur-0.086% phosphorus-0.122%,chromium-0.04%,nickle-0.10% molybdenum-trace. what is the grade of the above composition cast iron

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What is iron ferrite and where is it found?

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Explain the concept of casting and forging?

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How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny? What is the cause of this?

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Why post-heating is done in alloy steel welding?

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what medal conducts heat best?

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what is a rate controlling step ? how is it dependent on reaction path ? explain with an example.

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what is the meaning(definition)of EN grade of steel and also tell whats the full name of EN?

15 Answers   Hitachi, Mecon,

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Explain super alloys?

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