With Chrome open then Tap on the [1] to the right of the address bar. It will show all open tabs. Tap the 'X' to close the tabs. If you then re-open Chrome it should default and open a normal browser tab.
thanks for trying ,but still opens in black icognito screen .tried just about every thing on the internet ,except purchasing an app thats meant to clear it ,
why do you have to pay to clear something you havent done or set
It's just a simple Chrome tab page that's user initiated so any app that proclaims to clear it will either just force close the tab(s) or the app...both of which a user can do.
If you've not already tried it then try doing 'Force Stop' on the Chrome app and clearing the app cache. That will close any browser sessions & content meaning it 'should' default to normal open browser when restarted. If that doesn't work then something is amiss.
