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JAMB Chemistry 1995 Question 14

Question 14

Periodic Table

Helium is often used in observation balloons because it is

  1. A.light and combustible
  2. B.light and non-combustible
  3. C.heavy and combustible
  4. D.heavy and non-combustible
Show the answer and explanation

Answer: B (light and non-combustible)

Explanation

Helium is much less dense than air, so it gives lift. Being a noble gas, it does not burn, which makes it safer than hydrogen.