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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.

Chemistry
NCERT
Standard XII

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