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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 substance should a student add to acidic soil to raise its pH?Which of the following substances acts as an indicator by changing colour in the presence of acids and bases?Which gas is released when an acid reacts with a metal carbonate?Which of the following substances gives a basic solution when dissolved in water?What is generally formed when an acid reacts with a base?Which substances are formed in a neutralisation reaction?A student places blue litmus paper in an acidic solution and finds that it turns red. If the student gradually adds sodium hydroxide to the solution, what will be the colour of litmus near the neutralisation point?A student takes an antacid to relieve acidity. What type of reaction does an antacid mainly undergo with excess hydrochloric acid present in the stomach?Which substance is commonly used as an antacid to neutralise excess acid in the stomach?What kind of pH value does the most acidic solution have?What kind of pH value does the most basic solution have?After testing soil and finding it acidic, a student recommends adding lime to it. What is the main reason for this recommendation?Which substance is used to get relief from excess acidity?Milk of magnesia is useful for what purpose?When can tooth decay start in the mouth?Toothpaste is generally of which nature?Which of the following salts gives an approximately neutral solution in water?Which of the following substances acts as an olfactory indicator?Why is dissolving acids in water considered necessary?Why does dry hydrogen chloride gas show no effect on dry blue litmus?