Yes if it's the only way to escape check.
You capture it.
Yes
Touch move means that if you touch a piece and it has a legal move you must play it. Touch capture means that if you touch a piece of your opponent's and you can capture it you must do so.
You capture the King piece.
No.
The king may capture any piece other than the king itself .
Yes, any piece can.
The King is not allowed to be in check. If a piece is on a square where if the King were there, the King would in check, the King isn't allowed to capture it.
No, it cannot move unless it can capture or the blocking piece is moved out of the way.
The objective of chess is to checkmate the king, where the king is in check by a piece and it cannot block the check, move to another square, or capture the piece checking the king.
No, except for when the only way to get out of check is to capture the piece that is attacking your king.
The king in chess may capture any other chess piece except the enemy king .