Chemical Engineering Basics
Coke is added in the blast furnace to

Increase the fluidity of slag
None of these
Reduce & melt the iron ore
Remove sulphur & phosphorus from molten metal

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

Fine dispersions of alloy carbides in a ferrite matrix
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

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