Petroleum is a complex mixture of solid liquid and gaseous hydrocarbons, mixed with salt water and earthy particles. It is always found trapped between two impervious rocks. It is believed that petroleum is formed by the anaerobic decomposition of extremely small sea animals and plants which got buried in the sea bed millions of years ago.
Read the below questions and try to answer them.
What do you understand by refining of petroleum?

Explanation

**Step-by-Step Solution:**

1. **Definition of Refining of Petroleum**: Refining of petroleum is the process through which crude oil is transformed into useful products. It involves separating the various components of petroleum from one another.

2. **Purpose of Refining**: The main purpose of refining is to convert crude oil, which is a complex mixture, into simpler, usable products. This is essential because crude oil itself cannot be used directly for most applications.

3. **Process of Refining**: The refining process typically involves several steps, including distillation, where crude oil is heated and separated into different fractions based on their boiling points.

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