Indicator An indicator is a dye that Change colour or odour / smell in acidic and basic medium. When we put into acid and base it tell us whether the substance is an acid or base by change it colour or smell/odour. Types of Indicator: 1) Natural Indicator Those indicator which are obtained from nature […]
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NCERT Class 7 Science Fifth Chapter Acids, Bases and Salts Exercise Solution
NCERT Class 7 Science Fifth Chapter Acids, Bases and Salts Exercise Solution Inside Questions With Answers: Why Curd, lemon juice, orange juice and vinegar taste sour? Ans. This is because these substances contain acids. What is bases? Ans. Substances which are bitter in taste and feel soapy on touching are known as bases. What is […]