Question

Fresh milk has a $pH$ of $6$. On changing into curd, its $pH$ becomes

• A. More than $6$
• B. Less than $6$
• C. Remains $6$
• D. $7$

Answer 1

The correct option is B

Less than $6$

Explanation of correct option:

Option B:

1. At $25°C$, fresh milk has a $pH$ of $6$ that indicates its acidic nature. And when it changes into curd its acidity increases and thus the $pH$ value decreases.
2. So, it can be concluded that on changing milk into curd, its $pH$ become less than $6$.

Explanation of incorrect options:

Option A:

• $pH$ can't be more than $6$ because acidity increases, not decreases.

Option C:

• $pH$ can't remain $6$ because due to conversion acidity increases so its $pH$ value will also decrease.

Option D:

• Curd is not neutral but acidic in nature, so $pH$ can't be $7$.

Hence, option B is correct.