Here are the correct answers:

How many Chelsea players were named yesterday in England’s squad for the European Championships?
Four (Terry, Cole, Lampard and Cahill)

How many players who were then with Chelsea were in the squad the last time England played in the tournament?
Four (Terry, Joe Cole, Lampard and Bridge)

How many major international tournaments did former Republic of Ireland midfielder Andy Townsend appear in while a Chelsea player?
None

Which club did Chelsea sign goalkeeper Hilario from?
Nacional

Chelsea legend Ron Harris had a spell at which other London club?
Brentford