Current Affairs 8th Class

Category : 8th Class

Coal and Petroleum

·                     Natural resources can be classified into two types:

·                     Inexhaustible resources are the resources that are present in unlimited quantity in nature and are not likely to be exhausted by human activities.

·                     Exhaustible resources are the resources that are present in limited amount in nature. They can be exhausted by human activities. Forests, wildlife, minerals, coal, petroleum, natural gas etc. are the examples of exhaustible natural resources.

·                     Coal, petroleum and natural gas are fossil fuels that are formed under the earth crust by the decomposition of dead plant and animal remains.

·                     The slow process of conversion of dead vegetation into coal is called carbonisation.

·                     Coke, coal tar and coal gas are the products of distillation of coal.

·                     Petroleum gas, petrol, diesel, kerosene, paraffin wax, lubricating oil are obtained by refining petroleum.

·                     Coal and petroleum are primarily used as the fuel all over the world. These are exhaustible natural resources and thus, present in limited amount in nature. So, we should use them judiciously.

·                     One should follow the following advises to save petrol/diesel while driving. These are:

§  Drive at a constant and moderate speed as far as possible.

§  Switch off the engine at traffic lights or at a place where you have to wait.

§  Ensure correct tyre pressure, and take care of the regular maintenance of the vehicle.