Hello Gautham,
You haven't mentioned your qualifying examination, from your profile I assume it must be JEE. If not please specify
First of all congratulations on cracking such a prestigious exam.
For the allotment of seats in a particular college many factors are considered

• Branch of studies
• Number of seats available
• Highest Score
• Cut off Score
• Category

To know your chances of getting into your desired college and other probable colleges I would recommend you to use the following tool which would tell you the probable colleges you may get into based on your rank category and interest branch of study

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