The correct answer is (c) Jharia.
Jharia is the largest coalfield in India, located in the state of Jharkhand. It is estimated to contain about 30 billion tonnes of coal, making it one of the largest coal reserves in the world. The coalfield is also one of the oldest in India, with mining operations dating back to the 18th century.
The Jharia coalfield is a major source of coal for India’s power plants and steel mills. However, the coalfield is also a major source of pollution and environmental problems. The coal seams in Jharia are highly gassy, and there have been a number of mine fires and explosions in the past. The coalfield is also located in a seismically active area, and there have been a number of earthquakes in the past that have caused damage to the mines.
Despite the environmental problems, the Jharia coalfield is an important economic asset for India. The coalfield provides employment for thousands of people, and it is a major source of revenue for the government. The government is working to develop
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