Understanding pH Value

What is the pH value of a neutral substance?

• 0

• 7

• 14

• 7.1

Which of the following substances is considered acidic?

• Baking soda

• Soap

• Lemon juice

• Water

What is the pH range of bases?

• 0 to 6.9

• 7 to 14

• 7.1 to 14

• 0 to 7

Why do farmers test the pH of soil?

• To check if it is safe for swimming

• To ensure it is suitable for growing crops

• To measure its acidity

• To neutralize it

How can pH be measured?

• Using a thermometer

• Using pH paper or electronic pH meters

• By tasting the substance

• By feeling its texture