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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

What happens to the pH value when the concentration of hydrogen ions increases in an acidic solution?Among two acids of the same concentration, the one with lower pH will be what?Which of the following substances is acidic in nature?Which of the following substances is basic in nature?What colour does methyl orange indicator show in an acidic solution?What colour does phenolphthalein show in a basic solution?A rise in temperature during an acid–base reaction indicates what?What is formed when an acid reacts with a metal oxide?Non-metal oxides are generally of which nature?If a solution has pH 2, what will be its nature?Which of the following salts forms a basic aqueous solution?If a solution turns red litmus blue and turmeric reddish brown, what is its nature?What is the name of the salt formed when a magnesium ribbon is added to dilute hydrochloric acid?Which salt is formed when zinc reacts with dilute sulphuric acid?A bulb glows in an aqueous acid but not in dry acidic gas. What is the correct reason?What products are formed when dilute hydrochloric acid is added to sodium carbonate?In which experiment is the milky appearance of lime water the most useful test?Why can milky lime water become clear again when excess carbon dioxide is passed?During dilution of an acid, the outer surface of the glass container feels hot. What type of process does this show?A student added water to concentrated acid. Why is this dangerous?