Q. Helium gas is filled in balloons because

  • (A) Its atomic number is 2
  • (B) It is lighter than air
  • (C) It is one of the constitutents of water
  • (D) It is a noble gas
✅ Correct Answer: (B) It is lighter than air

Published by Yami Thakur ⭐ 10.63K Points at 07-Aug-2022 09:27 am in Chemistry

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