what barch colleges can i expect if i score 240 out of 400 in jee mains paper 2? I am an SC candidate from west Bengal.

You have scored very good marks and You also belongs to SC Category.

You can take admission in a very good NIT and in NIST, DTU. But Also try IIIT . It will be much better to get admission there.

Your Percentile based on category is: 99.74 - 99.94

Your Overall Percentile is: 99.37 - 99.57

Your Rank based on category is: 5 - 105

Your Predicted Rank is: 3782 - 5432

But Also

I will recommend you to check All The Colleges, That is available for You on basis of your rankings and Reservation, Then You can also check that at Our JEE MAINS COLLEGE Predictor. That will be very helpful for You.

JEE Main College Predictor 2020 - Predict Colleges based on your JEE Main Rank

JEE Main College Predictor – Know your College Admission Chances Based on your Rank/Percentile, Home State, Caste, Gender, Exam Result & Get ...

But with Percentile, You can't score Your Percentile on the basis of Marks because Percentile depends on a lot of other factors too which are equally important. Because Students are less this time and also Paper Variation also affects a lot. So One can't decide easily the percentile on the basis of marks.

So Let's Wait for the Result and Hope for the Best You will score well.

ALL THE BEST :)