R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Science Q. Helium gas is filled in ballons as (A) it is one of the constitutents of water (B) it is lighter than air (C) its atomic number is 2 (D) it is a noble gas 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) it is lighter than air You must be Logged in to update hint/solution 💬 Discussion 💬 Comment