Yes, you are Eligible for MCA Entrance Exams with low % in 12th provided you have studied mathematics in your 12thsome of the colleges do not consider 12th marks while giving admission in the MCA course, and they consider graduation marks.

This is the list of some MCA entrance exams in India:

AIMCET - All India MCA Common Entrance Test

Amrita Vishwa Vidyapeetham MCA Entrance Exam

BIT Mesra - Birla Institute of Technology Mesra MCA Entrance Exam

Delhi University MCA Entrance

IMCAT - Icfai School of Information Technology MCA Test

ICET - Integrated Common Entrance Test, Andhra

IIT JAM - Indian Institute of Technology Joint Admission

Jammu University MCA Entrance Exam Jawaharlal Nehru University Entrance Exam ..

Kerala Entrance Examinations for Admission to Master of Computer Applications (MCA)

LUCSAT - Lucknow University Computer Science Admission

MAH MCA CET - Maharashtra MCA Common Entrance Test

NIMCET - National Institute of Technology MCA Common Entrance Test .

RMCAAT - Rajasthan Master of Computer Application Admission Test

Pune University MCA Entrance Exam

PAM CAT - Punjab Admission to MCA Common Aptitude Test

TIET - Thapar University of Engineering and Technology MCA Entrance Test

VIT Vellore Institute of Technology Entrance Examination

WB JECA - West Bengal Joint Entrance Exam MCA