Chemical Engineering Basics
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

Disposing off a machine/property on as is where is basis
Mortgaging the obsolete machine/property
Disposing off machine/property, which is no longer useful in the present scenerio
Writing off the obsolete machine/ property

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Chemical Engineering Basics
The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

Increasing the concentration of zinc sulphate solution
Increasing the concentration of copper sulphate solution
Decreasing the surface area of the electrodes
Increasing the surface area of the electrodes

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Chemical Engineering Basics
Maraging steels derive their strength from the following mechanism:

Fine dispersions of intermetallics of Fe, Ni, Ti etc
A fine, highly dislocated and strong martensite
Fine dispersions of Fe₃ C nucleated on dislocations in austenite
Fine dispersions of alloy carbides in a ferrite matrix

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