Question

formation of petroleum and coal​

Answer 1

over million of years ago many plants and living organisms buried under the surface of earth due to volcano and due to movement of titanic plates , and due to the process of decomposition this buried plants and living organisms converts into coal and crude oil . and after the distillation of crude oil , petroleum formed.

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Answer 2

$\mathfrak{Answer}$

Occurrence of Petroleum:-

Petroleum is found at moderate depths (500m to 2000m) between two layers of impervious rocks. Petroleum deposits are usually found mixed with salt water. Petroleum, being lighter than salt, floats over ut. Natural gas is found above petroleum; it is trapped between the rock cap and the petroleum layer.

Petroleum is found in rock formations in the earth.

Formation of Coal:-

Coal was formed from plant remains got buried deep under the Earth's crust. Over a large period of time, the chemical and physical properties of these plant remains were changed through geological actions that led to the creation of this solid material.