Importance of pH in Daily Life
Importance of pH in Daily Life
The pH values of some common solutions
How is pH measured?
The pH of a solution is generally determined with the help of a pH paper, or universal indicator. The pH paper gives a particular colour with a solution of particular pH. The colour is compared with a chart which has different colours at different pH values.
Role of pH in everyday life:
1. In our digestive system: Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach. But when the amount of the acid goes beyond a certain limit due to indigestion, pain and irritation are created in the stomach. So, in order to neutralize the effect of excess acid, a mild base called antacid is usually taken. Magnesium hydroxide (milk of magnesia) is a mild base which is usually used as an antacid.
Fresh milk has a pH of 6. On changing into curd its pH becomes _________________ | |||
| Right Option : B | |||
| View Explanation | |||
Solutions A,B C and D have pH 2,3,7 and 12 . Which of these has the highest acidic strength? | |||
| Right Option : A | |||
| View Explanation | |||
The pH of a sample 'X' is found to be 10. The sample 'X' may be of the substance. | |||
| Right Option : C | |||
| View Explanation | |||
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Aman Kumar Shrivastava
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Om Umang
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