Question

Hydrogen although lighter than air is not collected by the downward displacement of air give reason

Answer 1

here is the ans....

this is because hydrogen is highly combustible and when it comes in contact with air it gets oxidized and burns with pale blue flame and produces water and thus defeats the purpose

hope it will help uuuu...

Answer 2

Answer: hydrogen is lighter than air it is not collected by downwards displacement because hydrogen is highly combustible and when it comes in contact with air it gets oxidized and burns with pale blue flame and produces

Hope it's help

Explanation: