I just took it last Thursday and I thought it was ridiculously easy. Def. the easiest ACS test I have ever taken... and I took O Chem and Gen Chem. I thought the questions were really basic... they didn't go into anything really in-depth. If you're a bio major, Section A is going to be simple. If you're better with Chemistry, Section B is goin to feel better.
Honestly, I didn't even study for it and I feel like I got an A. My teacher gave it to us that day after we had a 5-chapter exam... she said that it was really easy anyways.
She's a little nutty but she was right. Pretty much everyone in the class felt good coming out of the test. GOOOOOOOOOD LUCK!