Duralumin(or duralium)magnaliumaluminium, copper,magnesium, manganesealuminium, magnesiumlight and strongbalances and other lightinstruments, bodies ofaeroplanes and vehiclesutensils, electric heaters,resistorsGermansilvercopper, zinc, nickelhigh electricalresistanceORAL QUESTIONS1. Which metalloid can be said to be the backbone of the electronics industry?2. Steel is not a pure form of iron. What does it consist of? What is the advantage of addinganother substance to iron?3. Noble metals are used to make jewellery because they are very reactive. Do you agree? Give reasons.4. Painting a metal prevents it from corroding. Why?OUR HERITAGERecent excavations by archaeologists show that Indians were making iron implements as early1800 BCE. Around 200 BCE, high quality steel was being produced in India by heating wroughtiron, charcoal and glass until the iron melted and absorbed the carbon. It was called faulad.It was exported to parts of Asia and Europe.​