Dear aspirant,

Yes, you can upload the obc certificate from the block in jee mains 2022 but kindly see that the certificate should not be issued by the official not below the rank of tehsildar.

It can be issued by the sub divisional officer , circle officer , tehsildar, magistrate or district magistrate.

Dear aspirant hope you are doing well..

Yes , obc ncl certificate is valid for jee mains from block  or you may have obc ncl certificate issued from central government or government of India. For more details click on the link below..

https://engineering.careers360.com/exams/jee-main

Hope it's helpful for you..

Thank you