What is the validation limit for OBC certificate?

hi,
What is the validation limit for obc certificate?

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hi
the certificate of the obc category validates for the life long purpose, and it provides you different benefits when you show it.
Like foe example in all the government job examination, you get a relaxation of 3 years if you have this obc certificate, like in upsc, the age limit to appear in the upsc exam is 21-30 years, whereas for the obc category the age limit for giving the exam is 21-33 years.