Wacker Metroark Chemicals Lab Incharge Interview Questions and Answers

pH of water is a measure of its acidity or alkalinity.

• pH is a scale that ranges from 0 to 14.

• A pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline.

• Water with a pH of less than 7 is acidic, while water with a pH greater than 7 is alkaline.

• pH can be measured using pH indicators or pH meters.

• Examples of pH indicators include litmus paper, phenolphthalein, and bromothymol blue.

To determine whether a sample is acid or alkaline, you need to test its pH level.

• Acidic substances have a pH value less than 7.

• Alkaline substances have a pH value greater than 7.

• A pH value of 7 indicates a neutral substance.

• Examples of acidic substances include lemon juice and vinegar.

• Examples of alkaline substances include baking soda and soap.