diff --git a/src/lab/exp1/simulation/index.html b/src/lab/exp1/simulation/index.html
index d6ceab13..dea2f9d0 100644
--- a/src/lab/exp1/simulation/index.html
+++ b/src/lab/exp1/simulation/index.html
@@ -24,7 +24,7 @@
 			<p></p><br>
 			<p class="warningText">1. Given a well-behaved smooth function, integrate it over the given limits of integration ?</p><br>
 			<p class="warningText">2. Approximating solution to integral a smooth function.</p><br>
-			<p class="warningText">3. Integration Limits are from 0 to 30, b > a and b-a >= 1.</p><br>
+			<p class="warningText">3. Integration Limits are from 0 to 10, b > a and b-a >= 1.</p><br>
 		</div><!-- end of inputDivisionSimpleLoop -->
 	</div><!-- end of FirstInputBlock -->
 	<div class = 'SecondInputBlock' >
diff --git a/src/lab/exp1/simulation/numericalApproximation.js b/src/lab/exp1/simulation/numericalApproximation.js
index 5ca76384..24923f7c 100644
--- a/src/lab/exp1/simulation/numericalApproximation.js
+++ b/src/lab/exp1/simulation/numericalApproximation.js
@@ -290,8 +290,8 @@ window.view = {
 			alert('Enter numeric value of a and b');
 			return false;
 		} 
-		else if (valueA2 >= valueB2 || valueB2 > 30) {
-			alert('Integration Limits are from 0 to 30, b > a and b-a >= 1');
+		else if (valueA2 >= valueB2 || valueB2 > 10) {
+			alert('Integration Limits are from 0 to 10, b > a and b-a >= 1');
 			return false;
 		}
 		else {
diff --git a/src/lab/exp10/simulation/index.htm b/src/lab/exp10/simulation/index.htm
index 3e03797c..3e9c2158 100644
--- a/src/lab/exp10/simulation/index.htm
+++ b/src/lab/exp10/simulation/index.htm
@@ -40,6 +40,7 @@
 		     		<option> a + b - c </option>
 		            <option> a + b / c </option>
 		            <option> ( a + b ) / c </option>
+			    <option> a * ( b + c ) </option>
 		            <option> ( a + b ) * c - d </option>
 		            <option> ( a + b ) * ( c - d ) </option>
 		            <option> a * d % ( c - b ) * c - a * b </option>
@@ -77,4 +78,4 @@
 			</div><!-- end of resultDisplay -->
 		</div><!-- end of outputDivision -->
 	</body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp2/simulation/function.js b/src/lab/exp2/simulation/function.js
index 9d494050..11c2b728 100644
--- a/src/lab/exp2/simulation/function.js
+++ b/src/lab/exp2/simulation/function.js
@@ -178,13 +178,13 @@ window.view = {
 			options4[i].checked = false
 		}
 		if ( a !== '2')
-			alert('Incorrect value of input variables(arguments). Calculating the area of a rectangle requires the length of the two different parallel sides of the rectangle. Try again.')
+			alert('Incorrect value of input variables(arguments). Calculating the area of a right angle triangle requires the length of the two adjacent sides other than hypotenuese. Try again.')
 		else if ( b !== 'float' )
-			alert('Incorrect datatype of input variables(arguments). The value of the sides of a rectangle need not be integers. Try again.')
+			alert('Incorrect datatype of input variables(arguments). The value of the sides of a right angle triangle need not be integers. Try again.')
 		else if ( c !== 'float' )
-			alert('Incorrect datatype for return type. The value of the area of a rectangle need not be an integer. Try again.')
-		else if ( d !== 'a*b' )
-			alert('Incorrect formula for calculating the area of a rectangle. Try again.')
+			alert('Incorrect datatype for return type. The value of the area of a right angle triangle need not be an integer. Try again.')
+		else if ( d !== '0.5*a*b' )
+			alert('Incorrect formula for calculating the area of a right angle triangle. Try again.')
 		else
 			this.approveRectangleInputs()
 	},
@@ -268,7 +268,7 @@ window.view = {
 		document.getElementById('functionSquare').innerHTML += 'float area_sq (float a)<br>{<br> &emsp; float area = a*a;<br>&emsp; return area;<br>}'
 	},
 	displayFunctionForRectangle: function() {
-		document.getElementById('functionRectangle').innerHTML += 'float area_rect (float a,float b)<br>{<br> &emsp; float area = a*b;<br> &emsp; return area;<br>}'
+		document.getElementById('functionRectangle').innerHTML += 'float area_rightangletri (float a,float b)<br>{<br> &emsp; float area = 0.5*a*b;<br> &emsp; return area;<br>}'
 	},
 	displayFunctionForTriangle: function() {
 		document.getElementById('functionTriangle').innerHTML += 'float area_triangle (float a)<br>{<br>&emsp;float area = (sqrt(3)/4.0)*a*a;<br>&emsp;return area;<br>}'
@@ -318,8 +318,8 @@ window.view = {
 		alert( 'area from function call ' + String( i + 1 ) + ' ) : ' + functionCall + ' is ' + this.area )
 		this.correctInputs ++
 	},
-	area_rect: function( param, functionCall ) {
-		this.area = Number(param[0]) * Number(param[1])
+	area_rightangletri: function( param, functionCall ) {
+		this.area = Number(0.5*param[0]) * Number(param[1])
 		this.totalArea += this.area
 		alert( 'area from function call ' + String( i + 1 ) + ' ) : ' + functionCall + ' is ' + this.area )
 		this.correctInputs ++
@@ -367,7 +367,7 @@ window.view = {
 					alert( 'Incorrect function call at line ' + String( i + 1 ) )
 			}
 			else if ( parameter.length === 2 && functionCall === 'area_rect()' && isNaN(parameter[0]) === false && isNaN(parameter[1]) === false )
-				this.area_rect(parameter, parsedValue)
+				this.area_rightangletri(parameter, parsedValue)
 			else
 		 	alert( 'Incorrect function call at line ' + String( i + 1 ) )
 		}	
diff --git a/src/lab/exp2/simulation/index.html b/src/lab/exp2/simulation/index.html
index 5732a2ea..20cbe797 100644
--- a/src/lab/exp2/simulation/index.html
+++ b/src/lab/exp2/simulation/index.html
@@ -56,10 +56,10 @@
 			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group7" value="int"><label class="radioText">int</label></div>
 			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group7" value="float"><label class="radioText">float</label></div><!-- end of 3rd question -->		
 
-			<div class="questionTextRich">4. Choose formula for area of the rectangle :</div>
+			<div class="questionTextRich">4. Choose formula for area of the right angle triangle :</div>
 			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group8" value="a*a"><label class="radioText">a*a</label></div>
 			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group8" value="a*b"><label class="radioText">a*b</label></div>
-			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group8" value="2*&pi;*a"><label class="radioText">2*&pi;*a</label></div><!-- end of 4th question -->	
+			<div class="radioButtonHolder"><input type="radio" class="radiobutton" name="radio_group8" value="0.5*a*b"><label class="radioText">0.5*a*b</label></div><!-- end of 4th question -->	
 
 			<button class="button okButton" id = 'okRectangle'>OK</button>	
 		</div><!-- end of question block of rectangle -->	
@@ -119,7 +119,7 @@
 	<div class="executionDivisionTitle"><div class="executionPic"></div><div class="executionText">Step Execution</div></div>
 	<div class="stepExecutionDisplay" >
 		<div class="functionForSquare"><span class="textColor">//function for square</span><br><div id = 'functionSquare'></div></div>
-		<div class="functionForRectangle"><span class="textColor">//function for rectangle</span><br><div id = 'functionRectangle'></div></div>
+		<div class="functionForRectangle"><span class="textColor">//function for right angle triangle</span><br><div id = 'functionRectangle'></div></div>
 		<div class="functionForTriangle"><span class="textColor">//function for triangle</span><br><div id = 'functionTriangle'></div></div>
 		<div class="functionForCircle"><span class="textColor">//function for circle</span><br><div  id = 'functionCircle'></div></div>
 	</div><!-- end of stepExecutionDisplay -->
diff --git a/src/lab/exp2/simulation/rectangle.jpg b/src/lab/exp2/simulation/rectangle.jpg
index 706279ed..ff6b97ad 100644
Binary files a/src/lab/exp2/simulation/rectangle.jpg and b/src/lab/exp2/simulation/rectangle.jpg differ
diff --git a/src/lab/exp3/simulation/advControlFlow.js b/src/lab/exp3/simulation/advControlFlow.js
index 9f83de25..1d6b7aab 100644
--- a/src/lab/exp3/simulation/advControlFlow.js
+++ b/src/lab/exp3/simulation/advControlFlow.js
@@ -35,11 +35,21 @@ window.view = {
 	getInput: function() {
 		var inputValue = document.getElementById('simpleLoopInput').value
 		model.inp = Number(inputValue)
+		if(inputValue<0||inputValue>20)
+		{
+			alert('Invalid input!!The range of input is [0,20]');
+			return false;
+		}
 		this.clearExecutionSection()
 	},
 	getNestedInput: function() {
 		var inputValue = document.getElementById('nestedLoopInput').value
 		model.nestedInp = Number(inputValue)
+		if(inputValue<0||inputValue>20)
+		{
+			alert('Invalid input!!The range of input is [0,20]');
+			return false;
+		}
 		this.clearExecutionSection()
 	},
 	activateEvents: function() {
@@ -377,4 +387,4 @@ window.view = {
 		this.activateEvents()
 	}
 }
-window.onload = function() { view.init() }
\ No newline at end of file
+window.onload = function() { view.init() }
diff --git a/src/lab/exp4/simulation/1-D/index.html b/src/lab/exp4/simulation/1-D/index.html
index a6a25b17..baa0a80e 100644
--- a/src/lab/exp4/simulation/1-D/index.html
+++ b/src/lab/exp4/simulation/1-D/index.html
@@ -20,7 +20,7 @@
 			<button class = 'button okButton' id = 'btnOk' >OK</button>
 		</div><!-- end of arraySizeInputBlock -->
 		<div class = 'radioButtonDivision hide' id = 'inputButtonRadio' >
-            <div class = 'randomRadioButtonDivision' ><input type = 'radio' class = 'radiobutton' name = 'radio_group' id = 'btnRandom' ><label class = 'radioText' for = 'male' >Generate Random Values</label></div><!-- end of randomRadioButtonDivision -->
+            <div class = 'randomRadioButtonDivision' ><input type = 'radio' class = 'radiobutton' name = 'radio_group' id = 'btnRandom' onclick="document.getElementById('userInput').disabled=true;"><label class = 'radioText' for = 'male' >Generate Random Values</label></div><!-- end of randomRadioButtonDivision -->
             <div class = 'enterValueRadioButtonDivision' ><input type = 'radio' class = 'radiobutton' name = 'radio_group' id = 'btnManual'><label class = 'radioText' for = 'male' >Enter Values Manually</label></div><!-- end of enterValueRadioButtonDivision -->
 			<textarea class = 'arrayInputArea' name = 'firstname' placeholder = 'Enter values here in comma seperated format or seperated with space' id = 'userInput' ></textarea>
           	<div class = 'buttonHolder' ><button class = 'buttonDisable startButton' id = 'btnStart' disabled>Start</button><button class = 'buttonDisable nextButton' id = 'btnNext' disabled>Next</button></div><!-- end of buttonHolder -->
@@ -65,10 +65,10 @@
 		</div><!-- end of KeyPointerDisplayDivision -->
 		<div class = 'sortingDivision' id = 'sortingDiv' ></div>
 		<div class = 'currentKeyPositionIndicator' >
-			<div class = 'currentKeyValue' id = 'key'>0</div>
+			<div class = 'currentKeyValue' id = 'key'>0<br><img src="arrowSmall.png" height="20px"width="50px"></div>
 			<div class = 'textKeyValue' >Key Value</div>
 		</div><!-- end of currentKeyPositionIndicator -->
 	</div><!-- end of resultDisplay -->
 </div><!-- end of outputDivision -->
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp6/simulation/IfElse/basicControlFlow.js b/src/lab/exp6/simulation/IfElse/basicControlFlow.js
index 44d45ecc..8e5be1c5 100644
--- a/src/lab/exp6/simulation/IfElse/basicControlFlow.js
+++ b/src/lab/exp6/simulation/IfElse/basicControlFlow.js
@@ -262,14 +262,14 @@ window.view = {
     	displayFigures: function () {
     		this.drawDots();
     		this.drawFillRectangle();
-    		this.drawCircle(75, 75, '#000000');
-		this.drawCircle(275, 75, '#000000');
-		this.drawCircle(75, 325, '#000000');
-		this.drawCircle(275, 325, '#000000');
-		this.displayText('(x1, y1)', 65, 65); 
-		this.displayText('(x2, y2)', 265, 65);
-		this.displayText('(x3, y3)', 265, 345);
-		this.displayText('(x4, y4)', 75, 345);
+    		this.drawCircle(50,50, '#000000');
+		this.drawCircle(250,50, '#000000');
+		this.drawCircle(250,300, '#000000');
+		this.drawCircle(50,300, '#000000');
+		this.displayText('(x1, y1)', 40,40); 
+		this.displayText('(x2, y2)', 240,40);
+		this.displayText('(x3, y3)', 240,290);
+		this.displayText('(x4, y4)', 40,290);
 		this.canvasContext.save();
     	},
 	/* validationInput: check validation of input that is given by user and if input value is valid 
@@ -355,7 +355,7 @@ window.view = {
 			if (this.nextSiblingElement.id === 'codeContentIfElse4Id' || this.nextOfnextSiblingElement.id === 'codeContentIfElse6Id') {
 				if (this.nextSiblingElement.id === 'codeContentIfElse4Id') 
 					this.codeExecutionWithColour();
-				else if (model.valueOfX >= 75) 
+				else if (model.valueOfX >= 50) 
 					this.changeFlagValue('flagValue1', 'codeContentIfElse6Id', '1');
 				else
 					this.codeExecutionWithColourAndId('codeContentIfElse8Id');
@@ -363,7 +363,7 @@ window.view = {
 			if (this.nextOfnextSiblingElement.id === 'codeContentIfElse8Id' || this.nextOfnextSiblingElement.id === 'codeContentIfElse10Id') {
 				if (this.nextOfnextSiblingElement.id === 'codeContentIfElse8Id') 
 					this.codeExecutionWithColourAndId('codeContentIfElse8Id');
-				else if (model.valueOfX <= 275) 
+				else if (model.valueOfX <= 250) 
 					this.changeFlagValue('flagValue2', 'codeContentIfElse10Id', '1');
 				else
 					this.codeExecutionWithColourAndId('codeContentIfElse12Id');
@@ -371,7 +371,7 @@ window.view = {
 			if (this.nextOfnextSiblingElement.id === 'codeContentIfElse12Id' || this.nextOfnextSiblingElement.id === 'codeContentIfElse14Id') {
 				if (this.nextOfnextSiblingElement.id === 'codeContentIfElse12Id') 
 					this.codeExecutionWithColourAndId('codeContentIfElse12Id');
-				else if (model.valueOfY >= 75) 
+				else if (model.valueOfY >= 50) 
 					this.changeFlagValue('flagValue3', 'codeContentIfElse14Id', '1');
 				else
 					this.codeExecutionWithColourAndId('codeContentIfElse16Id');
@@ -379,7 +379,7 @@ window.view = {
 			if (this.nextOfnextSiblingElement.id === 'codeContentIfElse16Id' || this.nextOfnextSiblingElement.id === 'codeContentIfElse18Id') {
 				if (this.nextOfnextSiblingElement.id === 'codeContentIfElse16Id')
 					this.codeExecutionWithColourAndId('codeContentIfElse16Id');
-				else if (model.valueOfY <= 325) 
+				else if (model.valueOfY <= 300) 
 					this.changeFlagValue('flagValue4', 'codeContentIfElse18Id', '1');
 				else
 					this.codeExecutionWithColourAndId('codeContentIfElse20Id');
@@ -387,7 +387,7 @@ window.view = {
 			if (this.nextOfnextSiblingElement.id === 'codeContentIfElse20Id' || this.nextOfnextSiblingElement.id === 'codeContentIfElse22Id') {
 				if (this.nextOfnextSiblingElement.id === 'codeContentIfElse20Id') 
 					this.codeExecutionWithColourAndId('codeContentIfElse20Id');
-				else if (model.valueOfX > 75 && model.valueOfX < 275 && model.valueOfY > 75 && model.valueOfY < 325) {
+				else if (model.valueOfX > 50 && model.valueOfX < 250 && model.valueOfY > 50 && model.valueOfY < 300) {
 					this.codeExecutionWithColourAndId('codeContentIfElse22Id');
 					this.displayTextWithColour('Output: INSIDE', 100, 40, '#FF2400');
 				}
diff --git a/src/lab/exp6/simulation/IfElse/index.html b/src/lab/exp6/simulation/IfElse/index.html
index 46080f90..84067beb 100644
--- a/src/lab/exp6/simulation/IfElse/index.html
+++ b/src/lab/exp6/simulation/IfElse/index.html
@@ -14,10 +14,10 @@
 <div class = 'inputDivision' >
 	<div class = 'inputDivisionTitle' ><div class = 'initializePic' ></div><div class = 'initializeText' >Initialize</div></div>
 	<div class = 'inputDivisionBody' >
-		<div class = 'instructionText marginTop' > x1 = 075; &nbsp; y1 = 075;</div>
-		<div class = 'instructionText' > x2 = 275; &nbsp; y2 = 075;</div>
-		<div class = 'instructionText' > x3 = 275; &nbsp; y3 = 325;</div>
-		<div class = 'instructionText' > x4 = 075; &nbsp; y4 = 325;</div>
+		<div class = 'instructionText marginTop' > x1 = 050; &nbsp; y1 = 050;</div>
+		<div class = 'instructionText' > x2 = 250; &nbsp; y2 = 050;</div>
+		<div class = 'instructionText' > x3 = 250&nbsp; y3 = 300/div>
+		<div class = 'instructionText' > x4 = 050&nbsp; y4 = 300/div>
 		<div class = 'DayInputText' ><label class = 'dText' >X : </label><input value = '150' class = 'textField' type = 'text'  id = 'textFieldXId' ></div>
 		<div class = 'DayInputText' ><label class = 'dText'>Y : </label><input value = '150' class = 'textField' type = 'text'  id = 'textFieldYId' ></div>
         <div class = 'listDivision margin15' >
@@ -125,4 +125,4 @@
 	</div>
 </div>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp6/simulation/SwitchCase/basicControlFlow.js b/src/lab/exp6/simulation/SwitchCase/basicControlFlow.js
index 6822a81c..e5f61028 100644
--- a/src/lab/exp6/simulation/SwitchCase/basicControlFlow.js
+++ b/src/lab/exp6/simulation/SwitchCase/basicControlFlow.js
@@ -221,7 +221,7 @@ window.view = {
 			this.codeExecutionWithColour();
 	 	if (this.currentSiblingElement.className === 'break redClass')
 			this.codeExecutionWithColourAndId('closeBrc1Id');
-		if (1 <= model.inputNumber && model.inputNumber <= 6) {
+		if (1 <= model.inputNumber && model.inputNumber <= 5) {
 	 		if (this.nextSiblingElement.id === 'holidayId')
 				this.codeExecutionWithColourAndId('elseIfId');
 	 		else if (this.nextSiblingElement.id === 'workingdayId') {
@@ -230,7 +230,7 @@ window.view = {
 				this.setInnerHtml('outputDayId', 'WORKING DAY');
 	 		}
 	 	}
-		if ( model.inputNumber > 7 ) {
+		if ( model.inputNumber <=0 || model.inputNumber >7 ) {
 	 		if (this.nextSiblingElement.id === 'holidayId')
 				this.codeExecutionWithColourAndId('elseIfId');
 	 		else if (this.nextSiblingElement.id === 'workingdayId') 
@@ -240,7 +240,7 @@ window.view = {
 				this.setInnerHtml('outputDayId', 'INVALID INPUT');
 	 		}
 	 	}
-	 	if (model.inputNumber === 7) {
+	 	if (model.inputNumber === 6 || model.inputNumber === 7) {
 	 		if (this.nextSiblingElement.id === 'holidayId') {
 				this.codeExecutionWithColour();
 				this.changeOpacity('holidayImage');
diff --git a/src/lab/exp6/simulation/SwitchCase/index.html b/src/lab/exp6/simulation/SwitchCase/index.html
index 4af5361f..d19eac98 100644
--- a/src/lab/exp6/simulation/SwitchCase/index.html
+++ b/src/lab/exp6/simulation/SwitchCase/index.html
@@ -54,7 +54,7 @@
 		<div 	id = 'defaultId'      >&emsp;&emsp;default : str = null;</div>
 		<div 	id = 'defaultBreakId'   class='break'	 >&emsp;&emsp;&emsp;break; </div>
 		<div 	id = 'closeBrc1Id'    >&emsp;}</div>
-		<div 	id = 'ifId'           >&emsp;if ( strcmp( str, 'Sunday' ) == 0 ) {</div>
+		<div 	id = 'ifId'           >&emsp;if ( strcmp( str, 'Saturday' ) == 0 || strcmp( str, 'Sunday') == 0 ) {</div>
 		<div 	id = 'holidayId'      >&emsp;&emsp;printf ( 'HOLIDAY' ); }</div>
 		<div 	id = 'elseIfId'       >&emsp;else if ( str != null ) {</div>
 		<div 	id = 'workingdayId'   >&emsp;&emsp;printf ( 'WORKING DAY' ); }</div>
@@ -88,4 +88,4 @@
 	</div>
 </div>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/lab/exp9/simulation/JS/recursion.js b/src/lab/exp9/simulation/JS/recursion.js
index 1417a55b..ac63f467 100644
--- a/src/lab/exp9/simulation/JS/recursion.js
+++ b/src/lab/exp9/simulation/JS/recursion.js
@@ -23,8 +23,8 @@ window.view = {
 		 	alert('Enter number of disks first !')
 		 else if ( isNaN(input) === true )
 			alert('Number of disks must be an integer value !')
-		 else if ( input > 5 || input % 1 !== 0 )
-			alert('Only integral value (Greater than equal to 1 and less than equal to 5) is accepted !')
+		 else if ( input > 10 || input % 1 !== 0 )
+			alert('Only integral value (Greater than equal to 1 and less than equal to 10) is accepted !')
 		 else {
 			this.disableElement('btnOk')
 			this.enableElement('btnStart')
@@ -290,4 +290,4 @@ window.view = {
 		this.activateEvents()
 	}
 }
-window.onload = function() { view.init() }																										
\ No newline at end of file
+window.onload = function() { view.init() }