Question

Nitrogen and hydrogen combine to form ammonia under high temperature and pressure conditions. This is an example of

• A. biological $N_2$ fixation
• B. natural $N_2$ fixation
• C. industrial $N_2$ fixation
• D. electrical $N_2$ fixation

Answer 1

Answer: (C)

industrial $N_2$ fixation

Answer 2

In industrial orabiological nitrogenfixation.ammonia is produced industrially by direct combination of nitrogen with hydrogen (obtained from water) at high temperature and pressure. It is then changed into various types of fertilisers including urea.