Explain why high pressure is required in" the manufacture of sulphur trioxide by contact process.
State the law or principle used.

Explain why high pressure is used in the manufacture of ammonia by Haber's process. State the law or principle used. ""^(**"**)

The catalyst used in the manufacture of sulphuric acid by contact process is :

Discuss the theory involved in the manufacture of sulphuric acid by contact process.

Write all the chemical reactions involved in the manufacture of sulphuric acid by contact process.

Which of the following statements is correct of the manufacture of sulphuric acid by contact process?

With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process.

Explain why a high pressure tyre roll more easily than a low pressure tyre ?

Name the process used for the large scale manufacture of sulphuric acid.

Why the process of manufacture of H_2SO_4 is named contact process ?

Explain the following giving suitable reasons: In the manufacture of H_2SO_4 by contact process: For the dilution of sulphuric acid, water is not added to the acid but acid is added to water.