Question: Neutral water with pH about 7 becomes slightly acidic when aerated. This is because
Options:
A) oxygen from air is dissolved in the water which makes the water acidic
B) dirt, which get contaminated with the water during aeration makes the water acidic
C) ultraviolet radiation dissociates water molecules and makes water acidic
D) carbon-dioxide from air is dissolved
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Answer:
Correct Answer: D
BETA
