1) How many types of mining are there ? a) 7 b) 9 c) 2 2) Which mineral is named after a village ? a) Silver b) Manganese c) Bauxite 3) Which is the heaviest mineral a) Bauxite b) Iron ore c) Uranium 4) What were gold coins called in 50 BC? a) Arians b) Aureus 5) What is the unit of measurement of gold. a) Karat b) Kilo c) Gram 6) Which mineral is also known as sheet silicates ? a) Mineral fuels b) Mica c) Limestone 7) What is the deadliest metal on the earth? a) Mica b) Uranium c) Iron ore 8) What are minerals extracted from a) Ores b) Mica c) Iron ore

Physics

さんの投稿です
印刷
埋め込み

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?