Fossil fuels (coal, natural gas, and petroleum), air, water, salt, limestone, sulphur, and some specialty raw materials for special goods, like phosphates and the mineral fluorspar, are all examples of raw materials.
<h3>What is the primary raw material?</h3>
Sand (including silica sand), clay, hard rock, limestone (including metallurgical limestone), gravel, and other building and road-building supplies are considered basic raw materials (BRM). It also includes elements used to improve agricultural soil, such as limesand and gypsum.
<h3>How many different kinds of raw materials occur?</h3>
Direct and indirect raw materials can be separated into two categories. The finished product contains direct materials. Examples are the fabric used to produce clothing or the wood used to make furniture. Throughout the process, indirect materials are used.
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The complete question is -
What are the sources of chemical raw material ?
