No, You should have P/C/B subjects to be eligible for NEET exam.

You must have passed in the subjects of Physics, Chemistry, Biology/Bio-technology and English individually and must have obtained a minimum of 50% marks taken together in Physics, Chemistry and Biology/ Bio-technology at the qualifying examination. For candidates belonging to Scheduled Caste/Scheduled Tribes or Other Backward Classes, the marks obtained in Physics, Chemistry and Biology/Bio-technology taken together in qualifying examination must be minimum 40% instead of 50% for General candidates. Further, for persons for locomotor disability of lower limbs, the minimum of 45% marks for General-PH and 40% marks for SC-PH/ST-PH/OBC-PH are required.

To know the NEET eligibiliy criteria you can check below link

NEET Eligibility Critera

Good Luck!!

No, to get admission in MBBS/BDS and other medical courses you will have to study PCB in 12th as this is the basic eligibility to apply for NEET. Also, with PCM you can try for Engineering courses.
To know more about NEET eligibility criteria, you can go through the below article and let me know if you face any doubt -

Eligibility Criteria

Hope this helps!!!