yes they have suggested answers of past exams (they call it as Guideline answers)
However, they dont give it free, even online download is not free. I dont know why such foolish policy they adopt.
You have to pay Rs. 1200 to 2000 INR ( online payment ) to download them. Purchase log in Id at Knowledge portal of ICSI. https://knowledge.icsi.edu/SuggestedGuidelineAnswers.aspx
if link is not available search on google ICSI knowledge portal
You CAN NOT get these guideline answers anywhere on internet except ICSI knowledge portal website which is a paid service.
file a complaint at your nearest ICSI branch or new delhi HO for why they do such thing. they should make it available free of cost atleast for download.
Anyway, get it by paying money or try to file a complaint.