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Fresh milk has a pH of 6. When milk changes into curd, the pH value will:(a) Become 7
(b) Become less than 6
(c) Become more than 7
(d) Remain unchanged
Correct Answer: (b) Become less than 6.
Explanation: Fresh milks when converted into curd produces lactic acid. The value of pH for an acid is less than 7.
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