The magnetic observatory which was inaugurated on so” March 2015 is located at

Allahabad
Gulmarg
Shillong
Port Blair

The correct answer is (c) Shillong.

The magnetic observatory which was inaugurated

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on 20 March 2015 is located at Shillong, Meghalaya. It is the first of its kind in the North-East and is expected to help in studying the Earth’s magnetic field and its changes. The observatory is equipped with state-of-the-art instruments and will be used for research and educational purposes.

The other options are incorrect. Allahabad is a city in Uttar Pradesh, Gulmarg is a town in Jammu and Kashmir, and Port Blair is a city in Andaman and Nicobar Islands.