Are the central OBC certificates issued by different states for the purpose of admission to Central Institutes under the govt. of India different? Or do they look exactly the same irrespective of the state issuing it?
The certificate is considered to be valid only if it is issued under central OBC list which is decided by the central government for OBC NCL.
The OBC c ertificate issued by the state government will only be valid in the state only because you come under state OBC list. Every state has a different caste falling under OBC list.
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