M Mr. Dubey 🎓 Coach ⭐ 103.11K Points 📊 History Q. Which metal was unknown to Indus valley civilization? (A) Gold (B) Silver (C) Copper (D) Iron 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) Iron You must be Logged in to update hint/solution 💬 Discussion 💬 Comment