You code is very badly formatted so could not go through the whole code. 
Simple answer:
<div ng-repeat= 'question in questions'>
   <div ng-repeat='ans in question.answers' ng-click=someFn(ans)>
   </div>
</div>


JS:
$scope.someFn =function(ansSelected){
   // do something
};

Data:
questions{
    desc: 'blah',
    answers: ['opt1', 'opt2']
}




On Wednesday, November 4, 2015 at 8:14:07 AM UTC-8, Subhadeep Pal wrote:
>
> For each question there are 4 option. So when a option is clicked a class 
> is added . When a option is clicked on the same question , previous class 
> removed and class added to current option. But for that i need to access 
> each child scope of ng-repeat. That is each scope for each question. How to 
> do it?
>

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