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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
c) a rock
d) no correct variant

14. What rock is called “porous”?
a) a rock without pores
b) a rock with pores
c) a rock with holes
d) no correct variant

15. Why do reservoir rocks have to be porous?

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