NL50 preflop decisions

[FutureCarpal]

I am just starting to play poker again after a long hiatus. I thought it would be interesting to get feedback from people on the best way to play certain hands preflop at 6 handed FTP NL50. To narrow the scope of the topic, let's assume hero is in the BB position in all scenarios. BB is an interesting position because it is where we lose the most $$$ compared to other positions at the table, correct? Please indicate whether each situation is a raise, call, or fold, or if it is heavily read-dependent. Let's also assume 6 100 BB stacks. Players not mentioned below are folding.

Thanks for the feedback everyone

1) AQo vs UTG limp, UTG +1 raise to 3.5BB and CO call
2) AQs vs UTG +1 raise to 3.5BB and button reraise
3) 66 vs UTG raise to 3.5BB
4) JJ vs UTG +1 raise to 3.5BB and CO reraise to 12 BB
5) QQ vs UTG +1 raise to 3.5 BB and CO reraise to 12 BB
5) JQs vs UTG limp, button raise to 3.5 BB
6) KQs vs UTG+1 limp, MP raise to 3.5 BB, button cold call