Question

Name one industry in which limestone is used as a raw material .
A. Cement industry
B. Small scale industry
C. Textile industry
D. None of these

Answer 1

Hint: Limestone is defined as a sedimentary rock of carbonate in which it is composed of marine organisms. Limestone is widely used as a building material. Limestone is found in water areas. Raw materials are used for the primary production of goods.

Complete step by step answer:
Before talking about the answer, we should know about metallurgy. Metallurgy is defined as a study of metals on the basis of the physical and chemical behavior of the metal. It encompasses both science and technology of the metals.
Raw material is defined as an unprocessed material that is used to produce finished products. There are two types of raw material .
 Direct materials are defined as unprocessed resources that can be specifically traced to an end product. Indirect materials are defined as an unprocessed material that can't really be designated for specific finished goods .
Cements are made by calcining the mixture of $25%$ clay and $75%$ limestone which forms a calcium silicate clinker which is later mixed with a small amount of gypsum.
Limestone is used as a raw material for the production of cement. The powdered limestone is heated with clay to produce cement as a product. Limestone helps in minimizing water loss due to absorption. Limestone is also known as calcium carbonate which is formed by the accumulation of sediments that have carbonate minerals.

So, the correct answer is “Option A”.

Note: In the conclusion, cement is formed due to addition of limestone with clay. Limestone is used for the production of lime, it is used as a building material and as a white pigment in the product like toothpaste. It is also used as a decorative addition to rock gardens.