Answer :
Final answer:
On the pH scale, higher pH represents a more basic substance. While 1. gastric juice and 2. battery acid are highly acidic with low pH values, pancreatic juice and bile are more basic with higher pH values. Among the options, bile generally has the highest pH, ranging from 7.6 to 8.6.
Explanation:
Looking at the substances we have: Gastric juice (Option 1), Battery acid (Option 2), Water (Option 3), Pancreatic juice (Option 4), and Bile (Option 5), we can determine the relative pH based on basic knowledge about these substances. In the pH scale, a higher pH represents a more alkaline or basic substance, while a lower pH represents an acidic substance.
The pH of water is neutral and is about 7. Gastric juice and battery acid both have low pH values, making them highly acidic. Gastric juice's pH is about 1.5 to 3.5 and battery acid is even more acidic with a pH around 0. On the other hand, pancreatic juice and bile have relatively higher pH values.
Pancreatic juice has a pH that ranges from 7.1 to 8.2 and the pH of bile ranges from 7.6 to 8.6. Therefore, based on these ranges, bile (Option 5) typically has the highest pH.
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