A) Incombustible
B) Lighter than hydrogen
C) Radioactive
D) More abundant than hydrogen
Correct Answer: A
Solution :
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.You need to login to perform this action.
You will be redirected in
3 sec