Which of the following metals was not known to the Indus people:
The Harappans are used copper and bronze to manufacture axes, adzes, knives etc. Copper artifacts are found at larger and more economically developed settlements. Copper artifacts from Harappa and Mohenjo Daro demonstrated tin, arsenic, nickel or lead alloying, of which tin is the most common. Besides copper, the Harappans worked with gold, silver and lead. But Iron was not known
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