The pH of fresh groundwater slightly decreases upon exposure to air b – McqOptions

MCQOPTIONS

1.	The pH of fresh groundwater slightly decreases upon exposure to air because -
A.	carbon dioxide from air is dissolved in the water
B.	oxygen from air is dissolved in the water
C.	the dissolved oxygen of the groundwater escapes into air
D.	the dissolved carbon dioxide of the groundwater escapes intoair
Answer» E.

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