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Subjects

Science

Acids, Bases, and Salts

अम्ल, क्षारक और लवण

In Class 10 Science, under the chapter Chemical Substances – Nature and Behaviour, students study acids, bases, and salts through their properties, reactions, and everyday examples. The topic explains how these substances behave with indicators and with one another, including neutralisation, and introduces the formation and practical importance of common salts.

Practice questions

Which acid is mainly present in vinegar?A student suggests applying lemon juice to relieve the burning caused by an ant sting. Which substance would be more appropriate instead?Which of the following salts is formed from a strong acid and a strong base and has an aqueous solution that is approximately neutral (pH 7)?Which of the following substances generally forms an aqueous solution with a pH greater than 7?What do farmers generally add to improve acidic soil?Which substance is used to reduce the alkalinity of highly basic soil?A substance that dissolves in water to form a base is called what?What is an aqueous solution of sodium chloride commonly called?Metal oxides are generally what in nature?A farmer finds that the soil has a pH of 5. What should be added to reduce the soil’s acidity for better crop growth?A student dipped blue litmus paper in vinegar, and it turned red. What is the correct reason for this change?Acids change blue litmus paper into which colour?Bases change red litmus paper into which colour?A substance with a sour taste is generally of which type?A substance that feels soapy and slippery is generally of which type?Which main acid is present in lemon juice?A student says that lemon juice should be taken to reduce stomach acidity because it is sour. What is the correct correction to this statement?Which acid is present in curd?Which acid is mainly present in tomato?Which of the following substances is an example of a neutral salt?