EVERYDAY SCIENCE

Detailed explanation-1: -Urea is a white crystalline solid that contains 46% nitrogen as fertilizer and an animal feed additive. It is commonly used by the agricultural industry. Thus, the correct answer is option A i.e., 46%.

Detailed explanation-2: -Urea, a white crystalline solid containing 46% nitrogen, is widely used in the agricultural industry as an animal feed additive and fertilizer Here we discuss it only as a nitrogen fertilizer. Urea (46-0-0) usually has the lowest cost per pound of nitrogen compared to other single-element nitrogen fertilizers.

Detailed explanation-3: -Urea 46: a nitrogen fertiliser used worldwide Industrially synthesised from ammonia and carbon dioxide, the finished product in the form of granulated or prilled urea contains the elements carbon, oxygen, hydrogen and nitrogen.

Detailed explanation-4: -Urea 46 Production This is a two-step process where the ammonia and carbon dioxide react to form ammonium carbamate which is then dehydrated to urea. In the process, ammonia and carbon dioxide are fed to the synthesis reactor which operates around 180-210oC and 150 bar pressure.

Detailed explanation-5: -The agricultural industry widely uses urea, a white crystalline solid containing 46 percent nitrogen as an animal feed additive and fertilizer.