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

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

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

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

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