A major thermal power plant in Bihar is located at:

Barauni
Muzaffarpur
Kahalgaon
Patna

The correct answer is: c) Kahalgaon.

The Kahalgaon Thermal Power Station is a coal-fired power plant located in Kahalgaon, Bihar, India. It is owned and operated by NTPC Limited. The plant has an installed capacity of 2,100 MW. It is one of the largest thermal power plants in India.

The plant was commissioned in 1979. It has six units, each with a capacity of 300 MW. The plant uses coal as its primary fuel. The coal is sourced from mines in Jharkhand and West Bengal.

The plant is connected to the national grid. It supplies electricity to the states of Bihar, Jharkhand, Uttar Pradesh, and West Bengal.

The plant has a number of environmental features. It has a flue gas desulfurization plant to reduce emissions of sulfur dioxide. It also has a baghouse to reduce emissions of particulate matter.

The plant has been awarded the National Energy Conservation Award by the Ministry of Power, Government of India.

The other options are incorrect because:

  • Barauni is a city in Bihar, India. It is located on the banks of the Ganges River. It is the headquarters of the Begusarai district. The city is known for its oil refinery and thermal power plant.
  • Muzaffarpur is a city in Bihar, India. It is the headquarters of the Muzaffarpur district. The city is known for its mangoes and silk industry.
  • Patna is the capital of Bihar, India. It is the largest city in the state. The city is known for its historical monuments, including the Patna Sahib Gurudwara and the Golghar.