almendares55
06.05.2021 •
Chemistry
20. Ceramic materials are
(a) good conductors of electricity
(b) basically crystalline oxides or metals
(c) inorganic compounds of metallic and non-metallic elements
(d) none of the above
21. Which one are inorganic materials
(a) biological materials
(b) minerals and ceramics
(c) plastics
(d) Wood
22. Como
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