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

The correct option is Manipur.

Step-by-Step Explanation:

1. Understanding States vs. Union Territories:
In India, administrative divisions are classified primarily into States and Union Territories (UTs). States have their own elected state governments, whereas Union Territories are administrative divisions directly governed, in whole or in part, by the Central Government of India.

2. Analyzing the Given Options:

• Laddakh: Formed as a Union Territory of India on October 31, 2019 under the Jammu and Kashmir Reorganisation Act, 2019.
• Jammu & Kashmir: Formed as a Union Territory of India on October 31, 2019 under the Jammu and Kashmir Reorganisation Act, 2019.
• Manipur: It is a full-fledged State in Northeastern India (granted statehood on January 21, 1972) and is not a Union Territory.
• Chandigarh: A well-known Union Territory serving as the joint capital of Punjab and Haryana.

Conclusion:
Among the given choices, Manipur is a full State of India and therefore is NOT a Union Territory.