Which event will be fired when the user presses the back button?

Which of the following is NOT a supported attribute of the <ol> element in HTML 5.0?

In HTML5, contextmenu and spellcheck are:

Which of the following is NOT a valid way to store a value in local storage?

Which tag's positioning is independent of the main flow of the document?

If IE8 doesn't recognize an element (such as <article>), what will it do with that element?

Correct way to display a PDF file in the browser?

Which HTML5 feature is capable of taking a screenshot of a web page?

Which event is fired when an element loses its focus in an HTML5 document?

You are writing the code for an HTML form and you want the browser to retain the form's input values. That is, if a user submits the form and presses the browser's back button, the fully populated form is displayed instead of a blank form. Which of the following HTML 5 attributes will you use?

How can audio files be played in HTML5? var sound = new Audio('file.wav');