Chapter 2, Class 10 ACIDS, BASES AND SALTS Acids 1.Those substances which has sour (खट्टा) taste, is called acids. 2.The chemical nature of such substances is acidic. 3.The acids present in plant materials and animals are called organic acids. 4.Organic acids (or naturally occurring acids) are weak acids. 5.E.g. Curd, lemon juice, orange juice and vinegar (सिरका) taste sour, it means acidic in nature.
Important name of the Organic acids 1.Acetic acid contains in vinegar 2.Formic acid (Methanoic acid) in Ant’s sting (डंकमारना), Nettle sting 3.Citric acid – Citrus fruits such as oranges, lemons, etc. 4.Lactic acid in Curd (दही) 5.Oxalic acid in Spinach (पालक), tomatoes 6.Ascorbic acid (Vitamin C) in Amla, Citrus fruits 7.Tartaric acid in Tamarind (