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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

Below which pH can tooth decay start more easily?Why is toothpaste mildly basic?A student takes an antacid to get relief from acidity. What is the main function of an antacid?Why does applying baking soda on an ant sting give relief?A student uses toothpaste to reduce the effect of acid on teeth. Which property of toothpaste causes this effect?A farmer finds that the soil is acidic, resulting in poor crop growth. Which substance should be added to reduce the acidity of the soil?A student adds dilute hydrochloric acid to a white powder and passes the evolved gas through lime water. The lime water turns milky. Which ion is most likely present in the powder?What is a major use of bleaching powder?Plaster of Paris is made by heating which salt?A student says that an antacid increases acidity in the stomach. What is the correct correction to this statement?What effect does dry hydrogen chloride gas have on dry blue litmus paper?Why does blue copper sulphate become white on heating?A student adds sodium hydroxide solution to an acidic solution to increase its pH. Which statement is correct during this process?Which of the following salts is associated with a fixed number of water molecules and is called a hydrated salt?What is present with baking soda in baking powder?Which gas helps a cake rise?Which of the following substances can react with both acids and bases?Which of the following compounds forms a neutral solution when dissolved in water?Acid rain generally has pH less than which value?Which of the following substances produces hydrogen ions (H⁺) when dissolved in water?