11. What is the process of removing impurities, such as sulfur, from crude oil called?
a) Desalting
b) Desulfurization
c) Decarbonization
d) Dehydration
Answer: b) Desulfurization
12. Which gas is added to natural gas pipelines to detect leaks?
a) Oxygen
b) Carbon dioxide
c) Methane
d) Mercaptan
Answer: d) Mercaptan
13. Which country is the largest consumer of oil in the world?
a) China
b) United States
c) India
d) Russia
Answer: b) United States
14. What is the process of separating oil and gas from water produced during extraction called?
a) Dehydration
b) Desalting
c) Demulsification
d) Decarbonization
Answer: c) Demulsification
15. Which company is the largest publicly traded oil and gas company in the world?
a) ExxonMobil
b) Chevron
c) Saudi Aramco
d) Shell
Answer: a) ExxonMobil
