List of Group I Services
CCS – I Examination (Group I Services)
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Deputy Collector – Tamil Nadu civil service
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Deputy Superintendent of Police (DSP) – Tamil Nadu Police Service.
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Assistant Director – Rural Development
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Assistant Commissioner – Tamil Nadu Commercial Taxes Service
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District Registrar – Tamil Nadu Registration Service
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Deputy Registrar, Cooperative Department
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District Employment Officer – Tamil Nadu General Service
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District Officer (Fire and Rescue Service) – Tamil Nadu Fire and Rescue Service