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a) oil
b) water
c) carbon
d) no correct variant
6. What elements may often occur with natural gas?
a) ethane, propane, and butane
b) oxygen and carbon
c) methane and carbon
d) no correct variant
7. How do oil companies call crude oil that contains hydrogen sulfide?
a) “bitter crude”
b) “sour crude”
c) “sweet crude”
d) no correct variant
8. How do oil companies call crude oil that does not contain hydrogen sulfide?
a) “bitter crude”
b) “sour crude”
c) “sweet crude”
d) no correct variant
9. What can be used as a portable fuel?
a) methane
b) carbon
c) LPG
d) no correct variant
10. Oil refineries put crude oil through several chemical and physical processes to render it into
many useful products such as gasoline, kerosene, and …
a)ethane
b)methane
c)diesel fuel
d) no correct variant
11. Gasoline is made up of liquid hydrocarbons that are … in weight than the liquid
hydrocarbons that make up and diesel fuel.
a) lighter
b) heavier
c) tougher
d) no correct variant
12. How do scientists and engineers often call rock formations that hold hydrocarbons ?
a) “traps”
b) “reservoirs”
c) “oil areas”
d) no correct variant
13. Nothing looks more solid than …
a) a methane
b) an oil
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