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P-1 Metallurgy — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Metallurgy2 Marks
Question
Silver amalgam is used for filling dental cavities.
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Answer

(1) Silver is a soft metal and wears off on constant usage particularly due to abrasion. Silver amalgam is an alloy of silver with mercury.
(2) It is a hard substance. It is nontoxic. Besides these properties it is a lustrous shining substance. It melts at a comparatively low temperature and can therefore conveniently fill in the cavities. Hence, silver amalgam is used for filling dental cavities.

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