diff --git a/src/lab/exp1/index.html b/src/lab/exp1/index.html
index 0669719f..0c041884 100644
--- a/src/lab/exp1/index.html
+++ b/src/lab/exp1/index.html
@@ -56,11 +56,11 @@
   <div class="col-lg-2 visible-lg lab-index">
     <ul class="nav nav-pills nav-stacked">
       <li class="active"><a href="#intro">Introduction</a></li>
-      <li><a href="#theory">Theory</a></li>
-      <li><a href="#obj">Objective</a></li>
-      <li><a href="#man">Manual</a></li>
-      <li><a href="#proc">Procedure</a></li>
-      <li><a href="#further-reading">Further Reading</a></li>
+      <li><a class="tabOption" href="#theory">Theory</a></li>
+      <li><a class="tabOption" href="#obj">Objective</a></li>
+      <li><a class="tabOption" href="#man">Manual</a></li>
+      <li><a class="tabOption" href="#proc">Procedure</a></li>
+      <li><a class="tabOption" href="#further-reading">Further Reading</a></li>
     </ul>
   </div>
 
@@ -142,5 +142,13 @@
     </div>
   </div></div>
 
+<script>
+  let list = document.querySelectorAll('.tabOption')
+  console.log(list);
+  list.forEach(li=>li.addEventListener('click',e=>{
+    list.forEach(item => item.style.backgroundColor="#eee");
+    e.target.style.backgroundColor="#ddd";
+  }));
+</script>
 </body>
 </html>
\ No newline at end of file
diff --git a/src/lab/exp1/quiz.html b/src/lab/exp1/quiz.html
index 53b2b87c..06a00469 100644
--- a/src/lab/exp1/quiz.html
+++ b/src/lab/exp1/quiz.html
@@ -86,10 +86,19 @@
 <li><b> An approximate solution may be as good as the accurate solution for <input name="fib1" type="text"> purposes.</input></b></li><br><br>
 <p> <input target="_blank" type="submit" value="Submit answers for evaluation"/></p>
 </form>
-        </div>
-    </div>
-
-    
-    
+</div>
+</div>
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
   </body>
 </html>
\ No newline at end of file
diff --git a/src/lab/exp10/index.html b/src/lab/exp10/index.html
index 03946a51..4697ea1f 100644
--- a/src/lab/exp10/index.html
+++ b/src/lab/exp10/index.html
@@ -191,5 +191,17 @@
   <script src="http://code.jquery.com/jquery.js"></script>
   <!-- Include all compiled plugins (below), or include individual files as needed -->
   <script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
 </html>
diff --git a/src/lab/exp2/quiz.html b/src/lab/exp2/quiz.html
index ef778375..4e074ff8 100644
--- a/src/lab/exp2/quiz.html
+++ b/src/lab/exp2/quiz.html
@@ -108,9 +108,17 @@
           <!-- Quiz body here -->
         </div>
     </div>
-
-    
-   
-
-  </body>
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
+  </body
 </html>
diff --git a/src/lab/exp2/simulation.html b/src/lab/exp2/simulation.html
index 1fec27b9..bd192411 100644
--- a/src/lab/exp2/simulation.html
+++ b/src/lab/exp2/simulation.html
@@ -61,4 +61,4 @@
     
     
   </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp3/quiz.html b/src/lab/exp3/quiz.html
index 854f7019..5f6bfe1e 100644
--- a/src/lab/exp3/quiz.html
+++ b/src/lab/exp3/quiz.html
@@ -257,8 +257,19 @@
 </form>
         </div>
     </div>
-
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
     
    
   </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp4/quiz.html b/src/lab/exp4/quiz.html
index d6e6db68..aa9d56da 100644
--- a/src/lab/exp4/quiz.html
+++ b/src/lab/exp4/quiz.html
@@ -103,7 +103,18 @@
 
         </div>
     </div>
-
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
     
    
 
diff --git a/src/lab/exp5/index.html b/src/lab/exp5/index.html
index 5e5bdf00..8c1fbc9d 100644
--- a/src/lab/exp5/index.html
+++ b/src/lab/exp5/index.html
@@ -172,5 +172,17 @@
   <script src="http://code.jquery.com/jquery.js"></script>
   <!-- Include all compiled plugins (below), or include individual files as needed -->
   <script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp6/index.html b/src/lab/exp6/index.html
index 68854598..07e3e8d3 100644
--- a/src/lab/exp6/index.html
+++ b/src/lab/exp6/index.html
@@ -284,6 +284,17 @@
       </div>
     </div>
   </div></div>
- 
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp7/index.html b/src/lab/exp7/index.html
index 678940b8..e0ebcbfe 100644
--- a/src/lab/exp7/index.html
+++ b/src/lab/exp7/index.html
@@ -203,6 +203,17 @@
       </div>
     </div>
   </div></div>
-  
+      <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp8/index.html b/src/lab/exp8/index.html
index e34dfc57..42f84213 100644
--- a/src/lab/exp8/index.html
+++ b/src/lab/exp8/index.html
@@ -204,6 +204,17 @@
       </div>
     </div>
   </div></div>
-
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp9/index.html b/src/lab/exp9/index.html
index e1d22769..7fe13a72 100644
--- a/src/lab/exp9/index.html
+++ b/src/lab/exp9/index.html
@@ -138,6 +138,17 @@
       </div>
     </div>
   </div></div>
-
+    <script>
+    function clearinp(){ 
+      const a=document.querySelectorAll("input"); 
+      for(let i=0;i<a.length;i++){ 
+        a[i].checked=false; 
+      } 
+    }
+    function cleari(){
+      setTimeout(clearinp, 10000);
+    }
+    document.querySelector("p input").addEventListener("click",cleari);
+    </script>
 </body>
-</html>
\ No newline at end of file
+</html>