Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Give three uses of nitrogen.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The uses of nitrogen are:
1) fertilizers
2) food preservatives
3) refrigerant