Dear Mr. Sunil,
Please peruse the reply of Mr. Umakanthan once again. For the payment of Bonus, refer to The Payment of Bonus Act, 1965 & Rules, 1975. If the Bonus Act is applicable to an establishment, it applies to all those employees coming under the purview of the Act. The department/nature of duty performed has nothing to do with determining eligibility.
You have not gone through the acts you are mentioning. Please go through the same and revert with your further query, if any.