Oil and Gas Sector

51. What is the process of removing impurities, such as sulfur, nitrogen, and metals, from natural gas called?
a) Gas sweetening
b) Gasification
c) Gas scrubbing
d) Gas condensation

52. Which gas is the primary component of biogas, which is produced from organic waste materials?
a) Oxygen
b) Carbon dioxide
c) Methane
d) Nitrogen

53. What is the process of converting coal into a liquid fuel called?
a) Coal gasification
b) Coal liquefaction
c) Coalification
d) Carbonization

54. Which country is the largest consumer of natural gas in Europe?
a) Germany
b) United Kingdom
c) France
d) Italy

55. What is the term used to describe the process of searching for oil and gas reserves?
a) Exploration
b) Production
c) Extraction
d) Development