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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

The pH of an acidic solution changes from 1 to 4. What happens to acidity?Why does adding a suitable amount of slaked lime to acidic soil increase pH?Which statement about the nature of salts is scientifically correct?Which precaution is most suitable while handling a solution of pH 13?How can acid rain affect organisms living in lake water?One solution turns red litmus blue and another turns blue litmus red. What will be the main products on complete neutralisation?Why are metal oxides generally called basic?Why can aqueous solutions of non-metal oxides often turn blue litmus red?Why should curd not be stored in a copper vessel?A solution giving violet colour with universal indicator becomes blue when acid is added. What does this correctly mean?A student says carbonates give hydrogen gas with acids. What is the correct correction?When sodium hydroxide is added to an acidic solution, which ions combine to form water during neutralisation?A substance forms salt and water with acid but remains insoluble in water. What will it be called?For making bleaching powder, chlorine gas is passed over which substance?Why does an acidic solution not immediately become basic even after adding a lot of water?Why can it be wrong to decide whether a colourless solution is an acid or a base just by looking at it?What is the nature of a solution that turns blue litmus paper red?What is the nature of a solution that turns red litmus paper blue?If a solution has pH 7, what will be its nature?A solution has pH 3. What will be its nature?