Hello Prakansha, you have pretty decent score in TANCET. And on that you belong to MBC and it is like icing on the cake. Below is the list of the colleges:

• Velammal Engineering College, Chennai
• Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai
• Measi Institute of Management, Royapettah
• Gnanam School of Business, Sengipatti
• PSG Institute of Management, Coimbatore
• Galaxy Institute of Management, Chennai
• Coimbatore Institute of Management and Technology, Coimbatore
• PSNA College of Engineering and Technology, Dindigul
• JJ College of Engineering and Technology, Tiruchirappalli
• Sona School of Management, Salem

These are the college with minimum marks near or less than 31 marks. 

Hope this helps!!