Which one of the following coalfields is not located in Jharkhand ?

The Umaria coalfield is located in the state of Madhya Pradesh, not Jharkhand. It is part of the Gondwana coal formations found in the Umaria district of Madhya Pradesh [2][4]. In contrast, Jharia, Ramgarh, and Deogarh (also spelled Devgarh) are all prominent coalfields situated within Jharkhand. Jharia, located in the Dhanbad district, is India's largest coalfield and a primary source of coking coal [1]. Ramgarh coalfield is situated in the Ramgarh district along the Damodar River [3][4]. Deogarh coalfield is located in the Santhal Parganas region of Jharkhand [4]. While Jharkhand holds the largest coal reserves in India, Umaria specifically belongs to the Madhya Pradesh coal belt alongside other fields like Singrauli and Sohagpur [4].

Sources

1. [2] https://mlsu.ac.in/econtents/1895_Distribution%20of%20Coal%20&%20Petroleum%20in%20India.pdf
2. [4] https://en.wikipedia.org/wiki/Ramgarh_Coalfield
3. [1] https://rgipt.ac.in/pdf/Academic/PhD%20Thesis/Theis_Mrityunjay%20Kr%20Jha.pdf
4. [3] https://nmet.gov.in/upload/project_registration/63b7b8b4308e711%20South%20of%20Damuda%20Coal%20Block.pdf