Is the sentenc "This concludes the conference." a standard way for the chairman of a meeting to say in the end

Question

It's urgent, Thank you very much!

Answer 1

The chairman would normally say, "I declare this meeting (or conference, if the whole conference is over) adjourned."

"This concludes the conference" sounds like either a report or an introduction to the final event at the conference. Another possibility would be "The conference is now concluded" but it sounds less like the chairman is in control.

Answer 2

No, it isn't. It can only be used at the end of a conference and it wouldn't normally be the chairman who would say this, it would be the MC of the event.