Question

The pH of the stomach is

• A. 1.5-3.5
• B. 3.5-5.5
• C. 5.5-7.5
• D. 7.5-9.5

Hint:

Stomach acid is strong enough to dissolve metal; its pH is very low (1.5-3.5).

Answer 1

The Correct Option is A

Step 1: Concept
The stomach produces gastric juice containing hydrochloric acid to aid in digestion and kill pathogens.

Step 2: Meaning
pH is a scale used to specify the acidity or basicity of an aqueous solution.

Step 3: Analysis
To effectively activate digestive enzymes like pepsin, the stomach environment must be highly acidic. The normal resting pH of the stomach is typically very low, usually ranging between 1.5 and 3.5.

Step 4: Conclusion
Thus, the highly acidic range of 1.5-3.5 is the correct pH for the stomach.

Final Answer: (A)