Chemistry · Industrial Chemistry

Urea is industrially produced from synthetic ammonia and carbon dioxide. During ammonia synthesis, carbon dioxide is produced as a by-product from hydrocarbons such as natural gas. Urea production plants are typically situated near ammonia manufacturing sites to utilize this carbon dioxide effectively. Therefore, the correct raw materials for urea formation are ammonia and carbon dioxide. The other options listed involve components that are not directly used in urea formation.

Option A is incorrect. While steam and methane are used in the production of ammonia, urea formation specifically requires ammonia and carbon dioxide.

Option B is incorrect. Steam is not a direct raw material in the formation of urea. Urea is formed from ammonia and carbon dioxide.

Option C is incorrect. Methane and steam are not directly involved in the formation of urea. They are part of the process to produce ammonia, which is then used to form urea.

Option D is correct. Urea is industrially produced using synthetic ammonia and carbon dioxide. These components are key to the urea production process.