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Which gas is always present in geothermal fields?

(a) CO2

(b) H2S

(c) N2O

(d) H2O

This question was addressed to me in exam.

My doubt stems from Problems Associated with Geothermal Conversion in portion Ocean Energy & Geothermal Energy of Energy Engineering

1 Answer

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Correct option is (b) H2S

The explanation is: H2S (Hydrogen Sulfide) is always present in geothermal field. If this gas is present in excess quantities may cause harmful effects on the bearings. This also attacks electrical equipments and it may have adverse effects on corps and on river life.

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