Which one among the following Departments/Authorities is not under the Ministry of Home Affairs?

The Ministry of Home Affairs (MHA) comprises six major departments: the Department of Border Management, Department of Internal Security, Department of Home, Department of Official Language, Department of States, and Department of Jammu, Kashmir and Ladakh Affairs [1]. The Department of Official Language is explicitly listed as a constituent of the MHA [1]. The Department of States handles Centre-State relations and Union Territories, while the Department of Jammu, Kashmir and Ladakh Affairs deals with constitutional provisions and administration specific to those regions [2]. In contrast, the National Authority Chemical Weapons Convention (NACWC) is an office established under the Chemical Weapons Convention Act, 2000, and functions as a specialized body under the administrative control of the Cabinet Secretariat, not the Ministry of Home Affairs .

Sources

1. [1] https://igod.gov.in/organization/Jc4zv3QBGZk0jujBKgGW/E003/list
2. [2] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 41: Union Territories > ADVISORY COMMITTEES OF UNION TERRITORIES > p. 412