R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. In nuclear reactor, heavy water is used as (A) atomic smasher (B) moderator (C) fuel (D) coolant 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) moderator You must be Logged in to update hint/solution 💬 Discussion 💬 Comment