The correct answer is: A. Limestone – Kaimur
Limestone is a sedimentary rock composed mainly of calcium carbonate (CaCO3). It is the most common sedimentary rock on Earth, and the most widely used industrial mineral. Limestone is used in the manufacture of cement, lime, and other building materials. It is also used in the production of steel, paper, and other products.
The Kaimur Range is a mountain range in eastern India. It is located in the state of Bihar. The Kaimur Range is a major source of limestone. The limestone from the Kaimur Range is used in the manufacture of cement, lime, and other building materials.
The other options are incorrect because:
- Mica is a mineral that is found in many parts of India. However, it is not found in large quantities in Bhagalpur.
- Quartzite is a type of sandstone. It is found in many parts of India, including Madhubani. However, it is not a major source of quartzite in Madhubani.
- Lead-zinc is a mineral that is found in many parts of India. However, it is not found in large quantities in Gaya.
- None of the above is a correctly matched pair of mineral and district.