Question

# What are alloys? Name an important alloy which contains some of the lanthanoid metals. Mention its uses.

Solution

## An alloy is a solid or solution of two or more elements in a metallic matrix. It can either be a partial solid solution or a complete solid solution. Alloys are usually found to posses different physical properties than those of the component elements.An important alloy of lanthanoids is Mischmetal. It contains lanthanoids (4-95%), iron (5%) and traces of $$S,C,Si, Ca$$ and $$Al$$Uses(1) Mischmetal is used in cigarettes and gas lighters(2) It is used in flame throwing tanks(3) It is used in flame bullets and shills.ChemistryNCERTStandard XII

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