Which one among the following is NOT a Union Territory of India?

Sikkim

The correct answer is Option (2) → Sikkim

Sikkim is NOT a Union Territory of India.

India has 28 states and 8 Union Territories as of 2025. The Union Territories are: Andaman and Nicobar Islands, Chandigarh, Dadra and Nagar Haveli and Daman and Diu, Delhi (National Capital Territory), Jammu and Kashmir, Ladakh, Lakshadweep, and Puducherry.

• Jammu and Kashmir and Ladakh became Union Territories in 2019 after the reorganization of the former state.
• Lakshadweep is a long-standing Union Territory (island group in the Arabian Sea).
• Sikkim, however, has been a full state since May 16, 1975, when it officially joined the Indian Union as the 22nd state following a referendum and constitutional amendment.

Thus, among the options, Sikkim is the one that is a state, not a Union Territory.