Why do you think hydrogen is collected by downward displacement of water.
The hydrogen is collected by the downward displacement of water.
Explain Hydrogen is collected by downward displacement of water.
Why is granulated zinc used in laboratory preparation of hydrogen and why is hydrogen collected by downward displacement of water?
Why during laboratory preparation of hydrogen it is collected by downward displacement
Why hydrogen is collected by the downward displacement of water and not by air , even though it is lighter than air ?