Update Nitrogen.html

Nitrogen.html

@@ -66,7 +66,7 @@ <h3>Note:</h3> If you get no response after clicking 'Check answer' or 'Show ans
  <p style="font-size:115%; text-align:center;"> <input onclick="check(4,'Preparation of Nitrogen(Other methods)',2,3,3,3,1,0,'NH<sub>3</sub> + PbO','Pb + H<sub>2</sub>O + N<sub>2</sub>');" type="button" value="Check answer"></input>&nbsp;&nbsp;&nbsp;&nbsp; <input type="reset" value="Reset"></input>&nbsp;&nbsp;&nbsp;&nbsp; <input onclick="show(4,'Preparation of Nitrogen(Other methods)',2,3,3,3,1,0,'2 NH<sub>3</sub> + 3 PbO','3 Pb + 3 H<sub>2</sub>O + N<sub>2</sub>');" type="button" value="Show answer"></input></p></ol></ul>
 
 <p></p>
-<ul><li><h4>Reactions of Nitrogen:</h4></li>
+<li><h4>Reactions of Nitrogen:</h4></li>
 	<ol><li>At 3000<sup>o</sup>C or during lightning discharge Nitrogen reacts with Oxygen to form Nirogen monoxide(Nitric oxide):</li>
 	<p style="font-size:115%; text-align:center;"> <input style="font-size: 16px; text-align: center" size=1 name=q5a></input> N<sub>2</sub> + <input  style="font-size: 16px; text-align: center" size=1 name=q5b></input> O<sub>2</sub> &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q5c></input>NO</p> 
  <p style="font-size:115%; text-align:center;"> <input onclick="check(5,'Reactions of Nitrogen',1,1,2,0,0,0,'N<sub>2</sub> + O<sub>2</sub>','NO');" type="button" value="Check answer"></input>&nbsp;&nbsp;&nbsp;&nbsp; <input type="reset" value="Reset"></input>&nbsp;&nbsp;&nbsp;&nbsp; <input onclick="show(5,'Reactions of Nitrogen',1,1,2,0,0,0,'N<sub>2</sub> + O<sub>2</sub>','2 NO');" type="button" value="Show answer"></input></p>