Blind battle river donkbluff

[Burnsabre]

Haven't played before with villain but hes was 5 tabling so I assumed he was an ABCish TAG. This is our first real blind battle confrontation.

Limit Holdem Ring game
Limit: $5/$10
5 players
Converter

Pre-flop: (5 players) Hero is SB with 8[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img]
3 folds, <font color="#cc0000">Hero raises</font>, BB calls.

Flop: 2[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] (3SB, 2 players)
<font color="#cc0000">Hero bets</font>, <font color="#cc0000">BB raises</font>, Hero calls.

Turn: J[img]/images/graemlins/club.gif[/img] (3.5BB, 2 players)
Hero checks, <font color="#cc0000">BB bets</font>, Hero calls.

River: K[img]/images/graemlins/club.gif[/img] (5.5BB, 2 players)
<font color="#cc0000">Hero bets</font>, BB calls.

Results:
Final pot: 7.5BB

Question 1: 3 bet flop vs unknown?
Question 2: As played fold turn vs unknown (pretty bad turn card imo)
Question 3: Does representing the A or 9 produce a fold 1 in 5.5?