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Observe the following solutions
I. Black coffee
II. $0.2 \mathrm{M} \mathrm{NaOH}$
III. Lemon juice
IV. Lime water
V. Human Saliva
VI. Tomato juice
The number of solutions with $\mathrm{pH}$ less than 7 is
Options:
I. Black coffee
II. $0.2 \mathrm{M} \mathrm{NaOH}$
III. Lemon juice
IV. Lime water
V. Human Saliva
VI. Tomato juice
The number of solutions with $\mathrm{pH}$ less than 7 is
Solution:
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Verified Answer
The correct answer is:
$4$
Acidic solutions $(\mathrm{pH} < 7)$ are Black coffee, Lemon juice, Human Saliva, Tomato juice.
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