Chemistry
Give reasons for the following :
'Though hydrogen is lighter than air, it is not collected by the downward displacement of air'.
Related Questions
How can you obtain hydrogen from a mixture of hydrogen and carbon monoxide.
What do you observe when a piece of sodium is dropped into cold water ?
Complete the following word equations :
(i) Sodium hydroxide + zinc ⟶ hydrogen + ……………
(ii) Calcium + water ⟶ calcium hydroxide + ……………How would you obtain 'hydrogen from sodium hydroxide' solution other than by electrolysis ?