The first metal to be used by man was ___

Correct option is B

Ans. (b)
Sol. The first metal used by humans was copper. It was discovered during the Neolithic Period and marked the beginning of the Chalcolithic Age (Copper Age). Copper was easily available in its native form and could be shaped into tools and ornaments, making it ideal for early human use.
Explanation of each option:
· (a) Aluminium – Incorrect. It was discovered much later in the 19th century.
· (b) Copper – ✅ Correct. First metal used by humans, starting the Chalcolithic Age.
· (c) Silver – Incorrect. Known early but not the first metal used.
· (d) Iron – Incorrect. Came later during the Iron Age after copper and bronze.