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Periodic Classification of Elements — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
What are minerals?
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Answer

A mineral may be a single compound or a complex mixture of various compounds of metals found in the earth, e.g. Clay Al2O3. 2SiO2. 2H2O is the mineral of Aluminium.

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