Originally Posted by joginder
or if you hold the ESC key then it will go to home screen and still keep the application running and will not close
Not quite. The browser engine is always running, but ESC exits the current session.
However, if you hold down Alt/
and hit ESC, a task list will come up, at which point you can let go of ESC and scroll through the running apps and switch to one of them. This WILL leave the browser session open, so that when you go back to the same browser either through the menu or the task list, you will still be on the page you left it at.