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@Html.TextBoxFor(model => model.SurveyQuestions[i].Question)
@Html.ValidationMessageFor(model => model.SurveyQuestions[i].Question)

[Required(ErrorMessage = "Required field")] 
[Display(Name = "Question")] 
public string Question {get;set;}

1. I observed Html for input fields for which there is an validation error. The input field will have additional attributes such as "data-val-required" and "data-val"
2. Then I added these fields to textbox which needs to be validated.
3. Then I added Html.Validation() for textbox with validation message.

@if (i == 0)
{
 @Html.TextBoxFor(model => model.SurveyQuestions[i].Question, new Dictionary { { "data-val-required", "required" }, { "data-val", "true" },  { "title", "Question " + (i + 1) }, {"class","QuestionTextBox"} })           
 

 @Html.ValidationMessage("SurveyQuestions[0].Question", "At least one question is required.")
}
else
{ 
 @Html.TextBoxFor(model => model.SurveyQuestions[i].Question, new { @class = "QuestionTextBox", @title = "Question " + (i + 1) })    
}

$(document).ready(function ()
{
    // ...
});

Shorthand syntax - 

$(function ()
{
    // ...
});

jsfiddle - it is very useful online page where you can check any jquery functions.
 Link http://jsfiddle.net/