The correct option is Rajasthan.
Explanation
The cement industry is a raw material-intensive sector, primarily dependent on the availability of limestone, coal, and gypsum. Since limestone is a weight-losing raw material, the industry is strongly localized near limestone deposits to minimize transport costs.
- Rajasthan: It is the leading state in India in terms of both cement production and installed capacity. The state possesses extensive limestone reserves, particularly in the belts of Chittorgarh, Nagaur, Kota, and Udaipur, which facilitates large-scale production.
- Other Major Producers: Andhra Pradesh, Telangana, Tamil Nadu, Gujarat, and Madhya Pradesh are other significant contributors to India's cement output.
- West Bengal: While the state has cement manufacturing units (often grinding units utilizing slag from steel plants), it is not a leading producer of raw cement compared to the limestone-rich states of Western and Southern India.
Key Takeaway: Rajasthan is the largest producer of cement in India, driven by its vast reserves of high-grade limestone.