Correct Answer: (c) Diamond is produced in Madhya Pradesh
Note: Diamond is a solid form of Carbon. India's only diamond mine is in Panna Kaimur range is located in Madhya Pradesh. Presently, Diamond fields of India are grouped into four regions.
1. South Indian Tract of Andhra Pradesh, comprising parts of Anantpur, Kadapu, Guntur, Krishna, Mahabub Nagar and Kurnool districts.
2. Central Indian tract of Madhya Pradesh.
3. Behradin- Kodawali are in Raipur district and Tokapal, Pugapal, etc.
4. Eastern Indian tract mostly Odisha, lying between Mahanadi and Godavari valleys.