It is not a good idea to use underline in webpage. It is because the text on webpage gets real messy.
To underline text, you can use HTML <u> tag. Enclose the text you want to underline within <u> and </u> tags. For example: <u>Underline this text</u>.
A frame-based site typically does not employ a BODY tag.
You can stop your webpage from redirection to another page. For this you just have to remove the anchor tag.
Video tag easily helps us to embedd videos in webpage. These videos can be used by video tag.
Yes
yes
HTML works on the tag based technology. Each tag defines a function which it executes when run.
True
Read this webpage: http://me2guide.weblog.com/tag/upload-photo/
A doctype is a header, so it should be placed at the top of the webpage. When writing HTML for a website, it should be placed directly above the tag.
A text area can be used to add lengthy text in a webpage It contains a big text block for user input.
You don't need to use a tag - scrollbars will automatically be added at the side of the page if the text is long enough.