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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

Why does plaster of Paris become hard when mixed with water?Gypsum forms plaster of Paris when heated at about 373 K. Why may the desired product not be obtained on excessive heating?Which is the correct set of products formed in the chlor-alkali process?At which electrode is chlorine produced in the chlor-alkali process?At which electrode is hydrogen produced in the chlor-alkali process?A farmer's soil is too acidic. What is the most suitable way to improve it for crops?If the soil of a field becomes too basic, which substance can be useful to add?Why does hydrochloric acid show stronger acidic effect than acetic acid at the same concentration?In which case is electrical conductivity most likely to be highest?A solution is a good conductor of electricity and turns blue litmus red. Which ions mainly give acidic properties to this solution?A solution turns red litmus blue and feels soapy to touch. Which ions give it basic properties?Which substance is used with acid in a soda-acid fire extinguisher to produce carbon dioxide?Why does adding baking powder make a cake rise?What is the main difference between baking soda and baking powder?How does washing soda help in softening hard water?Why does acid rain damage marble buildings?If an acid reacts with both a metal carbonate and a metal hydrogen carbonate, which common product is formed in both cases?In which reaction can salt, water, and carbon dioxide all be formed?A student adds water to an acidic solution and observes that the pH changes from 2 to 4. What is the most correct meaning of this change?A solution that turns blue litmus red is of which nature?