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petroleum

Grade 6 Chemistry

class 6 separation of substances

Chemistry Mixture: A substance obtained by mixing more than one pure substance Pure Substance: A substance that is made up of only one kind of particles Homogenous Mixture: A mixture in which all components are evenly distributed throughout the mixture is called as Homogenous mixture Heterogenous Mixture: A mixture in which all components are…

Grade 8 Chemistry

Class 8 Coal and Petroleum

Coal & Petroleum. 1. What are Natural Resources? 2. How are Natural resources classified? Depending on abundance and availability they are classified into Exhaustible Natural resources and Inexhaustible natural resource. Inexhaustible Natural Resources Exhaustible Natural Resources These are present in unlimited quantity in nature. These resources are present in limited…