Dear Aspirant,

As your options have been freezed in the JOSAA counselling you will have to upload the caste certificate or your application for 1st round will be rejected.Once the options have been freezed you cannot change your category to general.So do not panic as there are 7 rounds in JOSSA counselling and if you have applied for category certificate you will get it in around 1 week.So be ready for second round with all documents.I wish you best of luck.

To choose from the best colleges you can also use the following link-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer