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{:(,"Column I",,"Column II (pH)"),((A),"...

`{:(,"Column I",,"Column II (pH)"),((A),"MilK",(p),2.2),((B),"Human saliva",(q),6.4),((C),"Human blood",(r),6.8),((D),"Lemon juice",(s),7.4):}`

A

A-p, B-q, C-s, D-r

B

A-r, B-q, C-s, D-p

C

A-r, B-s, C-q, D-p

D

A-q, B-r, C-s, D-p

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to match the substances in Column I with their corresponding pH values in Column II. Here's a step-by-step breakdown of the solution: ### Step 1: Identify the pH of Milk - The pH of milk typically ranges from 6.7 to 6.9. - Therefore, the closest value in Column II is **6.8**. **Conclusion for A (Milk):** - A corresponds to (r) 6.8. ### Step 2: Identify the pH of Human Saliva - The pH of human saliva ranges from 6.2 to 7.6. - The closest value in Column II is **6.4**. **Conclusion for B (Human Saliva):** - B corresponds to (q) 6.4. ### Step 3: Identify the pH of Human Blood - The normal pH of human blood is approximately **7.4**. **Conclusion for C (Human Blood):** - C corresponds to (s) 7.4. ### Step 4: Identify the pH of Lemon Juice - Lemon juice is known to be acidic, with a pH around **2.2**. **Conclusion for D (Lemon Juice):** - D corresponds to (p) 2.2. ### Final Matching: - A (Milk) → (r) 6.8 - B (Human Saliva) → (q) 6.4 - C (Human Blood) → (s) 7.4 - D (Lemon Juice) → (p) 2.2 ### Answer: The final matching is: - A → r - B → q - C → s - D → p
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