string myQuestions = "<Questions>" +
                               "<Question val='Whats your name'>" +
                                   "<Answer val='Xyz'>" +
                                       "<Question val='Whats Xyz'>" +
                                           "<Answer val='Its a Girlz Name'>" +
                                               "<Question val='What the prefix, MS. or MRS.'>" +
                                                   "<Answer NextQuestionId='0' val='Its Ms.'/>" +
                                               "</Question>" +
                                           "</Answer>" +
                                       "</Question>" +
                                   "</Answer>" +
                               "</Question>" +
                               "<Question val='Where do you live'>" +
                                   "<Answer NextQuestionId='0' val='India'/>" +
                               "</Question>" +
                           "</Questions>";

        XElement xQuestions = XElement.Parse(myQuestions);

        string questions = string.Empty;
        string ans = string.Empty;
                
        foreach (XElement xe in xQuestions.Descendants())
        {
            if (xe.Name.ToString().ToLower() == "question")
            {
                questions = xe.Attribute("val").Value;
                ans = xe.Element("Answer").Attribute("val").Value;

                Response.Write("<b>Question :</b>" + questions + "|| <b>Answer :</b>" + ans);
                Response.Write("<br/>");
            }

            }
        }

This will give you output as -

Question :Whats your name|| Answer :Xyz
Question :Whats Xyz|| Answer :Its a Girlz Name
Question :What the prefix, MS. or MRS.|| Answer :Its Ms.
Question :Where do you live|| Answer :India