After a tough goalless first half City came through with three goals inside 15 mins in the second half.
Firstly Jay Bothroyd headed City infront, he soon followed it up with a second when he hooked a shot into the goal.
City then broke at pace from their own half for Chopra and Paul Parry to combine before Parry' sperfect pass alowed Chopra to run onto and score.
Peter Enckelman played the whole game as he competes with David Marshall for the No. 1 shirt.
The Bluebirds were cheered on by three fans who have been in Portugal to see both games after flying out on Tuesday.
City fly back to the UK now and face Celtic at home (Wed 22nd July, 7:45pm), Swindon away (25th July, 3:00pm) and then Valencia at home on Saturday August 1st, ko 3:00pm.
The folowing week on August 8th the new season kicks off with Scunthorpe the visitors to the Cardiff City Stadium.
Cardiff City (v Select XI): P Enckelman, P Quinn (A Matthews 75), M Hudson (A Morris 75), G Gyepes (A Gerrard 45), T Capaldi (K McNaughton 45), P Parry (J Magennis 75), G Rae (S McPhail 45), J Ledley (capt), P Whittingham, R McCormack (M Chopra 66), J Bothroyd (C Burke 70). Subs: D Marshall (gk), M Kennedy, A Morris.
Match report from the official website.
Match report from the Echo.