Capital cities are typically administrative and service centers. Towns with names like Jharia, Raniganj, Khetri, Dhanbad, or Singrauli are strongly associated with mining.
Step 1: Define a mining town. A mining town is a settlement that has developed primarily due to nearby mining activity.
Step 2: Analyze the options.
Jharia (Jharkhand) is famous for its large coal mines.
Raniganj (West Bengal) is one of India's oldest coalfields.
Khetri (Rajasthan) is famous for its copper mines.
Patna is the capital city of Bihar. Its primary functions are administrative, educational, and commercial. It is not a mining town.