The industrial preparation of nitric acid by Ostwald's process involves ?

Which of the following is INCORRECT about large scale preparation of nitric acid by Ostwald's process ?

Write the equations involved in the preparation of nitric acid by Ostwalld's process by maintaining the reaction conditions.

How is nitric acid prepared by Ostwald's process ?

Explain manufacture of nitric acid by Ostwald's process.

Concentration of nitric acid obtained in Ostwald's process.