Question

व्हाट वास द रोल ऑफ पार्ट्स वेस्ट इन मारता कॉन्फिडेंट सिंह​

Answer 1

Answer:

How is petroleum found and what is petroleum and its derivatives known as and why?

Answer:

Petroleum is found between the layers of rocks and is derived from oil fields located in off shore and coastal areas. Then this is sent to refinery which processes the crude oil and produces a variety of products. Petroleum and its derivatives are called Black gold because they are valuable.