CBSE Acids, Bases and Salts Class 7 Extra Questions
- Substances that tastes sour contains acids and chemical nature of such substances is acidic
- Substances which are bitter in taste and feel soapy on touching are bases and chemical nature of such substances is basic
- Indicators are used to taste whether a substance is acidic or basic
- Litmus is the most commonly used natural indicator. Please refer Acids, Bases and Salts Class 7 Extra Questions for more information.
CBSE Revision Notes 