1.
You are washing cooking pans in the home with soap. Your mom asks you to wash properly so that there are no soap layers to spoil the food. You have red litmus, phenolphthalein, China rose solution and blue litmus papers for project purpose. As a chemistry student, what do you use to check soap layers in the pan safely?
2. Plants do not grow well when the soil is either too acidic or too basic. When the soil is too acidic, we add __________ to neutralize the soil acidity.