The primary reason balloons and dirigibles are filled with helium instead of hydrogen is because:
○Hydrogen is flammable.
○Hydrogen is toxic.
○Helium is lighter than hydrogen.
○Hydrogen seeps through the balloon material too quickly.
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3
Answer:
Helium is used in balloons in place of hydrogen because it is incombustible. He do not catch fire like hydrogen. He is a inert element. Hence, option A is correct.
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1
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answer
Helium is used in balloons in place of hydrogen because it is incombustible. He do not catch fire like hydrogen. He is a inert element. Hence, option A is correct.
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