No they don't tell that... Its an automated mail which only says.. "u've been shortlisted, our HR team will contact you in 7-8 business days".

I mean do I get any email confirmation if I'm not selected like "Sorry to inform you that you're not selected" ?

They will let you know if you're selected. If rejected, they might or might not reply. But If you're selected you'll receive a mail as soon as you complete the test. I hope it helped. :)

Thank you so much

As soon as you submit the quiz u will get the mail... May be if you get shortlisted otherwise i don't know

How long do they take to announce results of quiz round?