1)
Where was the Paroches? In Bayis Rishon, a wall separated the Kodesh ha'Kodoshim from the Heichal, and not a Paroches!
1.
'Rashi': There was a door in that wall. Through it, the Kohen Gadol between entered the Kodesh ha'Kodoshim [on Yom Kipur]. Even though there were doors, the Paroches was over the opening.
2)
What Keruvim were on the Paroches?
1.
'Rashi': There were designs of Keruvim. Radak ? also the Paroches of the Mishkan, it says "Ya'aseh Osah Keruvim" (Shemos 26:31).
