Hi Nirmit following is the answer to ur questions in sequence,
1. There is no limit to no of pcc attemps U can give as much as u want........but only till Nov 2012(last attmp for pcc,thereafter pcc will be history like pe2)
2.If u do not clear pcc by Nov 2012 then u will get corresponding exemption in IPCC(unit wise scheme...eg suppose u secure 65 mks in costing then in ipcc in costing it will be taken as 65mks.)
more specificlly to state it means that whatever subject u clear u will be exempted from appearing the same in IPCC.
3.Friendly advise.......pls under no cirucmstance u take conversion to IPCC . If ur unable to clear PCC then let the articlesget over.......belive me u will be al lot releved man . See if ur articles get over ur final attemp will be due immediately u pass pcc or ipcc whichever is favouring but let the articles get over first.
Regards
yash jain