Chemistry
Answer
The four uses of hydrogen are:
- The oxy-hydrogen flame obtained by burning hydrogen and oxygen together has a very high temperature of about 2800°C - 3000°C. Hence it is used for cutting and welding of metals.
- It is used as a fuel as hydrogen has high heat of combustion.
- It is used for hydrogenation of vegetable oil.
- It is used as a reducing agent in extraction of metals.
Related Questions
(a) Name a process by which hydrogen gas is manufactured.
(b) Give equations for the reactions.
(c) How is hydrogen separated from carbon dioxide and carbon monoxide?
Hydrogen is a good reducing agent. What do you understand by the above statement? Explain with the help of copper oxide as an example.
Give three differences between Cathode and anode.
Give three differences between Cation and anion.