McqMate
| Q. |
Petroleum is a mixture of – |
| A. | elements |
| B. | hydrocarbons |
| C. | polymers |
| D. | salts |
| Answer» B. hydrocarbons | |
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Explanation: Petroleum or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. A fossil fuel, it is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure. |
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