Which of the Following Fossil Fuels Is the Hardest to Extract

question 87

Multiple Choice

Which of the following fossil fuels is the hardest to extract from the ground?

• A)petroleum
• B)coal
• C)natural gas
• D)methane hydrate
• E)All of the above have the same difficulties.

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Definitions:

Glycerol

A simple polyol compound with three hydroxyl groups, commonly used in pharmaceutical and food industries, as well as in the manufacture of dynamite.

β-D-Ribopyranose

A sugar molecule that is a form of ribose having a six-membered oxygen-containing ring, in the β-anomeric form.

Haworth Structure

A method for depicting cyclic sugars as planar rings with hydroxyl groups and other substituents positioned above or below the plane.

α-Furanose

A form of sugar where a furan ring, a five-membered oxygen-containing ring, is present in the α-configuration, relating to the position of the substituent at the anomeric carbon.