[Isura]

Welcome. Try to post just 1 hand next time, it generates more discussion and is easier to read.

Also, posting any relevant reads (even small ones) is better than nothing.

1) If you call the flop, there will be just a pot-sized bet left on the turn. You don't want him to take a free card with a draw, and I don't think I could fold on a blank turn since a pair of Q's, or a draw may still bet the turn. I think you're ahead often here, and sometimes he has a set (you beat anything else, he's not likely to have Q9). So I would go all-in.

2) I think you can fold this. Unlikely hand 1, it is much less likely that he is semibluffing here. Looks like he has two pair or better, or AK.

3) Just call. I don't think you can get him off of a pair. He will feel committed, and doesn't have much money behind. You have odds to call against most of his hands. If he checks the river though, I may bluff.