NEET 2015 Biology Paper

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Question : 30 of 82

Marks: +1, -0

Human urine is usually acidic because

[NEET 2015]

potassium and sodium exchange generates acidity
hydrogen ions are actively secreted into the filtrate
the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
excreted plasma proteins are acidic

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