Which of the following gases is commonly emitted into the atmosphere from an open-loop geothermal system?
A. Hydrogen sulphide
B. Hydrogen
C. Carbon
D. Silicon
Answer:A
Which of the following gases is commonly emitted into the atmosphere from an open-loop geothermal system?
A. Hydrogen sulphide B. Hydrogen C. Carbon D. Silicon
Explanation: Hydrogen sulphide is commonly emitted into the atmosphere from an open-loop geothermal system. Carbon and silicon are not gases. Even if hydrogen is emitted it is not the most common one.