Hello Khushboo,Yes you can fill NIMCET 2019,apart from NIMCET you can fill other forms also.

Here are some of the colleges name you can prefer for MCA

National Institute of Technology - [NIT], Thiruchirapalli- through NIMCET

National Institute of Technology - [NIT], Warangal- through NIMCET

Jawaharlal Nehru University - [JNU], New Delhi- through JNUEE

University of Hyderabad - [UOH], Hyderabad- Own Entrance exam

Motilal Nehru National Institute of Technology - [MNNIT], Allahabad through NIMCET

To know about various NIT colleges RANKING FOR MCA follow this link:https://youtu.be/PqjrmpyyVCY

To know Top 20 colleges for MCA in India follow this link:https://youtu.be/tbFHhXTHstM

Hope this helps you

Good luck.