Bikram porel with your 4929 rank in WBJEE exam under the SC category tab, you have a moderate chance of getting admission in a government college. But if you can please tell me your overall rank along with the SC category rank then I can even mention you the college's name along with the branches of those colleges you can get. I need the overall rank because in all the last year cut-off links the closing rank even for the SC category has been mentioned as the overall rank, not your category rank. 

You can check out the last year cut-offs of top colleges and in which streams you have a good chance of admission by checking out the link given below:

• https://engineering.careers360.com/articles/wbjee-cutoff

Feel free to ask if you have any more queries. All the best!!