Q. The terms “syama-ayas or krishna-ayas” are associated with which of the following?

[A] Bronze

[B] Copper

[C] Gold

[D] Iron

Answer: D

Explanation: Iron was an important metal used for implements in this period. It was called syama-ayas or krishna-ayas or the dark metal.

  • Iron is believed to have played an important role in the conversion of the forests of the Ganga Valley into agricultural lands.
  • By the end of Vedic period, the knowledge of iron had reached eastern Uttar Pradesh and Videha.

Source: Tamil Nadu NCERT