Chemistry
Define (a) alloy (b) amalgam
Metallurgy
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Answer
(a) Alloy — Alloy is a substance prepared by adding other metals [or non-metals] to a base metal in appropriate proportions to obtain certain desirable properties. It is usually made by melting the components together and solidifying the mixture.
(b) Amalgam — Amalgam is an alloy in which the base metal is mercury. Examples are Na/Hg [liquid amalgam], Zn/Hg amalgam [used in voltaic cells].
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