Yes it will be applicable and worth but the income certificate should be produced latest one while counseling

Dear Aspirants ,

If we go through your query then Income certificate and cast certificate both are different .Like

Income Certificate is an official document issued by the state government certifying annual income details of the applicant/applicant’s family. The key information in this certificate includes details of the annual income of the family/individual from various sources as per available state government records for a specific financial year and it is availing various subsidies and schemes like eScholarship.

Caste Certificate is a government approved proof of one’s belonging to a particular caste or community. This certificate is issued by the particular state governments to the occupants who affiliate themselves as ‘Schedule Caste’ or ‘Other Backward Classes.’ The individuals having place in SC/OBC/ST can acquire Caste Certificate to avail the benefits of reservation provided to them under the Constitution of India .

If you go through the cast certificate then there is no validity of expire but if we go through the income certificate then it will expired after 6 months and you have to renewal.

I hope it will helpful

Thanks