PETROLEUM

Petroleum (L. petroleum, from Greek: petra (rock) + Latin: oleum (oil)) or crude oil is a naturally occurring, flammable  liquid  consistin...

1.       Petroleum is formed over thousands of years comes from a.        Dinosaurs                          d. plankton and plants b....

1.        Gasoline with octane number 75, means. . . a. Gasoline is composed of 75% isooktana and 25% hexane. b. Gasoline is composed of...