Hello Pramita,

With a percentile of 71.1524 in JEE mains your rank might be around 278493 and you might get some of following colleges:

• Ojaswini Institute of Management & Technology, Damoh
• Guru Nanak Institute Of Technology
• Hooghly Engineering & Technology College
• MCKV Institute Of Engineering
• Sushila Devi Bansal College of Engineering, 

You can explore more colleges based on your JEE mains performance, using the careers360 JEE mains college predictor tool:

https://engineering.careers360.com/jee-main-college-predictor

All the best