My course

Hey there! We numbered the parent chain in a way that gives the priority functional group (the ketone) the lowest possible locant. I hope this clears things up!

Hey there! The lone pair on that nitrogen is part of the aromatic π system, so it's not available for effective hydrogen bonding. You can review this around the 3:10 mark of the video. Hope this clears things up!

Hey there! It can't form hydrogen bonds because no hydrogen donor is present within the molecule. Since the question is about intermolecular hydrogen bonds, it’s asking whether the molecule can form hydrogen bonds with other identical molecules. Hope this clears things up!