From your query, it's understood that you have been employed by a Co-op Society and are likely to enjoy Central Govt. benefits. This does not mean you will become a Central Govt. employee automatically just by enjoying the benefits that Central Govt. employees have. So long as your employer is a Co-op Society, it is advisable to refer to your Terms & Conditions applicable to employees. Societies coming under the governance of the Central Govt. are not government offices; they are autonomous bodies falling under the Co-op Societies Act or the Societies Act of the respective states.
Regards,
Kumar.s.