[Ervin]

Не стал читать все, но если я правильно понял то вот вариант решения:

<div id="question1" class="question">
  Question.
  <input type="radio" name="question1" value="0" />Anwer1
  <input type="radio" name="question1" value="1" />Anwer1
</div>
<div id="question2" class="question">
  Question.
  <input type="radio" name="question2" value="0" />Anwer1
  <input type="radio" name="question2" value="1" />Anwer1
</div>

function showRightAnswers() {
	var answers = [0, 1],
		elements = document.getElementsByClassName("question"),
		rightAnswers = [];

	for(var i = 0, leng = elements.length, answer; i < leng; i++) {
		answer = elements[i].querySelector(":checked");
		
		if(answer.value == answers[i]) {
			rightAnswers.push(elements[i]);
		}
	}
	
	console.log(rightAnswers);
	
	for(var i = 0, leng = rightAnswers.length; i < leng; i++) {
		rightAnswers[i].style.border = "1px solid black";
	}
}