Eligibility for obc ncl certificate

Admittedly, your mother is alive. If so, how is it that you are in receipt of  (family) pension?

How are you getting a pension when your mother is an employee?

If your mother is a government employee and your father too was a government employee, then the salary income and the pension income is not taken into consideration for computing annual income of the family for furnishing OBC NCL certificate.

You don't worry about the inciome limit, you may have to se if you are otherwise eligible owing to your mother's designation.