Which of the following subjects is NOT included in the Concurrent List?

The correct option is Irrigation.

Explanation

The Seventh Schedule of the Indian Constitution distributes legislative powers between the Union and the States through three lists: the Union List (List I), the State List (List II), and the Concurrent List (List III). The Parliament has exclusive power to legislate on Union List subjects, while State Legislatures have exclusive power over State List subjects in normal circumstances.

Option Analysis:

• Irrigation: Irrigation (Correct)
  Irrigation is a subject under the State List (Entry 17). This entry covers water supplies, irrigation and canals, drainage and embankments, water storage, and water power, subject to the provisions of Entry 56 of List I (Regulation and development of inter-State rivers).
• Education: Education (Incorrect)
  Education is listed in the Concurrent List (Entry 25). Originally, it was a subject in the State List but was transferred to the Concurrent List by the 42nd Constitutional Amendment Act, 1976. This allows both the Centre and States to legislate on technical education, medical education, and universities.
• Adoption: Adoption (Incorrect)
  Adoption falls under the Concurrent List (Entry 5). This entry encompasses matters of personal law, including marriage and divorce, infants and minors, adoption, wills, intestacy, and succession.
• Trade Unions: Trade Unions (Incorrect)
  Trade Unions along with industrial and labor disputes are listed in the Concurrent List (Entry 22). This ensures that labor laws can be uniform across the country while allowing states to address specific local requirements.

Key Takeaway:
Subjects of local importance such as Agriculture, Irrigation, Police, and Public Order are typically in the State List. Subjects requiring national uniformity or joint responsibility, such as Education, Forests, Criminal Law, and Marriage, are placed in the Concurrent List.