Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Chemistry Organic Compounds Containing Nitrogen Aliphatic Nitrogen compounds
Urea, a commonly used nitrogen - based fertiliser, is prepared by the reaction between ammonia and _______.
1
carbon dioxide
2
hydrogen
3
oxygen
4
More than one of the above
5
None of the above