Hi Prafull G.

this is the WrapperText class,

public with sharing class wrapperText{
   public string answer='';
   public Question__c ques;
   public List<wrapperText> textWrap = new List<wrapperText>();
   public wrapperText(Question__c ques, String ans)
   {
  
    for(Question__c ques1 : [Select id,Name,question__c,Option_1__c,Option_2__c from question__c] ) {
  
  
  
        textWrap.add(new wrapperText (ques1 , answer));
    system.debug('---------********----11----->'+textWrap);
    }
       
   }  
}

controller----

public class sampleCon1 {
   public string answer = '';
   public List<wrapperText> textWrap {get;set;} {textWrap = new List<wrapperText>();}


   public sampleCon1(){
   for(Question__c ques : [Select id,Name,question__c,Option_1__c,Option_2__c from question__c] ) {
  
  
  
        textWrap.add(new wrapperText (ques , answer));
    system.debug('---------********----11----->'+textWrap);
    }
 
 
   }
 
 
 
     public string getAnswer() {    
         return answer;
    }
                 
    public void setAnswer(string answer) {
    {this.answer= answer;}
   } 
 
       public List<Question__c>getQuestion (){
  
     List<Question__c>listQuestion=[Select id,Name,question__c,Option_1__c,Option_2__c from question__c];
  
        return listQuestion;
     }        

   
    public PageReference test() {
        system.debug('------------------>'+answer);
        return null;
    }
    public List<Question__c>listQuestion{get;set;}
    /*
    public List<wrapperText> gettextWrap (){
    List<wrapperText> wrpTxt = new List<wrapperText>();
    for(Question__c ques : [Select id,Name,question_detail__c,Option_1__c,Option_2__c from question__c] ) {
  
    system.debug('-------------11----->'+wrpTxt);
  
        wrpTxt.add(new wrapperText (ques , answer));
  
    }
    return wrpTxt;
     }        
      */
}


BUT I"M getting following error in VF page

Error: Unknown property 'wrapperText.val'

<apex:page controller="sampleCon1">
    <apex:form id="theForm">
  
      <apex:outputPanel id="str">
    
      </apex:outputPanel>
         <script>
                      
             function test1(id)
            {
                var theRadioButtonSet = document.getElementById(id);
                if (theRadioButtonSet.checked){
                    //alert('You Checked : '+theRadioButtonSet.value);
                    radiovalue(theRadioButtonSet.value);
              
                }            
             
            }
         </script>
     
         <apex:actionfunction name="radiovalue"  rerender="str">
       
         <apex:param name="radio" value="{!answer}"/>
       
         </apex:actionFunction>
       
       
      <!------- New PageBlock  Line ------------------------------------------> 
      
         <apex:pageblock >
         <apex:dataList id="Datalist1" value="{!textWrap}" var="Dlist" rows="2">
      
          <!-- <apex:outputField label="Question" value="{!Dlist.ques.question_detail__c}"/><br/> -->
          <apex:selectRadio id="SelectRadio1" onchange="test1(this.id);" value="{!Dlist.val}" >
      
               <!-- <apex:selectOption itemValue="india" itemLabel="India" />
               <apex:selectOption itemValue="ap" itemLabel="AP" /> -->
       
             <apex:selectoption itemlabel="{!Dlist.ques.Option_1__c}" itemvalue="{!Dlist.ques.Option_1__c}" />
             <br/>
             <apex:selectoption itemlabel="{!Dlist.ques.Option_2__c}" itemvalue="{!Dlist.ques.Option_2__c}" />
       
          </apex:selectRadio>
        
        
          <apex:outputPanel id="out">
          
           
                <p>You have selected:
                 <apex:outputText value="{!Dlist.val}"/></p>
                 <br/>
              
               
              </apex:outputPanel>
       
       
              
         <apex:commandButton value="Submit" action="{!test}" rerender="out" status="status" />
       
         </apex:dataList>
       
       
       
       
         </apex:pageBlock>
               
   </apex:form>
</apex:page>

BUT I"M getting following error in VF page

Error: Unknown property 'wrapperText.val