Match List I with List II
| List I | List II | ||
|---|---|---|---|
| (Liquid) | (pH Value) | ||
| A. | Milk | I. | 3 |
| B. | Pure water | II. | 6.5 |
| C. | Blood | III. | 7 |
| D. | Apple Juice | IV. | 7.4 |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-II, B-III, C-IV, D-I
The pH scale runs from 0 to 14: 7 is neutral, values below 7 are acidic and values above 7 are basic.
A. Milk — this matches II. 6.5. Milk is slightly acidic, with a pH of about 6.5; it turns more acidic as it sours.
B. Pure water — this matches III. 7. Pure water is neutral.
C. Blood — this matches IV. 7.4. Human blood is slightly basic, kept between about 7.35 and 7.45.
D. Apple Juice — this matches I. 3. Apple juice is acidic because of the malic acid in apples.