Hello Param!
Here us a link to download MHTCET 2019 answer key from their official website where you'll find PCM answer key also :-
https://mhtcet2019.mahaonline.gov.in/
Once you know your score, you may check your expected rank here:-
https://engineering.careers360.com/mht-cet-rank-predictor?icn=MAHA__CET_rp&ici=MAHA__CET_article_contmap
To predict which college you can get into, you can use this College predictor:-
https://www.careers360.com/mht-cet-college-predictor?ici=MAHA__CET_article_view_text-mapping&icn=MAHA__CET_rp
Hope this helps :)
Best of luck!