how to delete my account on seminar project

If you do not believe that you will use Facebook again, you can request that your account be permanently deleted. Note that you will not be able to reactivate your account or recover anything you have added. Before you do this, you may want to download a copy of your Facebook information. Then, if you want your account to be permanently deleted without any recovery options, log in to your account and let us know.
When you delete your account, people will not be able to see it on Facebook. It may take up to 90 days from the start of the removal process to delete all the things you have posted, such as your photos, status updates, or other data stored on backup systems. While we are removing this information, it is inaccessible to other people using Facebook.
Some of the things you do on Facebook are not stored in your account. For example, a friend can still have messages from you even after deleting your account. That information remains after you delete your account.