Observe the following solutions I. Black coffee II. $0.2 \mathrm{M} \mathrm{NaOH}$ III. Lemon juice IV. Lime…

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
  1. $2$
  2. $5$
  3. $4$
  4. $3$

Solution

Acidic solutions $(\mathrm{pH} < 7)$ are Black coffee, Lemon juice, Human Saliva, Tomato juice.

Asked in: AP EAMCET 2023 (16 May Shift 2)

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