Advertisements
Advertisements
Question
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Advertisements
Solution
Calcium is expensive.
APPEARS IN
RELATED QUESTIONS
FILL IN THE BLANK
........................... means ‘maker of water’ in Greek.
FILL IN THE BLANK
In electrolysis of water, dilute sulphuric acid is added to increase ..................of water.
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
Why nitric acid is not used in the preparation of hydrogen?
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Complete and balance the following reaction.
Fe + HCl →_____________ +___________
Give reason:
A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.
