Q. Helium is used in balloons in place of hydrogen because it is
A) Incobusible
B) Lighter than hydrogen
C) Radioactive
D) More abundant than hydrogen
Explanation
(a)
Helium(He) is a non-flammable(incombustible) gas and its lifting power is 93% as compared to flammable hydrogen gas, due to these reasons it is used in filling balloons and other lighter air –crafts.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.