Which of the following is incorrect about the relation between HTML and XHTML?

You have defined the following image in an XHTML document:

You have to add a list of products in a drop-down list. What will you use to group the identical products under a category name?

Choose appropriate option. One of the differences between XHTML and HTML 4.01 is that the 'name' attribute has been replaced by the 'id' attribute in:

Which is correct about the tag?

Correct way to use a paragraph in XHTML?

Which elements are form elements?

The DOCTYPE declaration is required:

Which links will validate in XHTML 1.0 Strict?

Correct value for an email link?