The PH of milk is __________?
Correct answer: B. 6.5
- A. 6.0
- B. 6.5
- C. 7.0
- D. 7.5
Explanation
Fresh milk is mildly acidic, with a pH close to 6.5, mainly because of dissolved salts, proteins, and carbon dioxide. A pH of 7.0 would indicate neutrality rather than normal fresh milk.
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Chemical principles appear in acids, bases, salts, solutions, oxidation, combustion, corrosion and neutralisation, along with the composition and uses of common substances. Coverage includes soaps and detergents, fertilizers, medicines, food preservatives, polymers, fuels and water treatment, while distinguishing physical changes from chemical reactions.
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