From left to right top row #3,5,and 6 appear ok rest look like reproductions. Positive id has to happen in hand but the majority of the cheap made for sale ones are all similar.
3
Those arrowheads are modern reproductions. Usually made in India and can be found on Ebay and for sale in tourist shops. If you want other opinions check out arrowheads.com. You can post them and get replies there.