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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

Washing soda softens hard water by removing which ions?Which gas does baking soda give on reacting with an acid?How does baking powder help food rise?What is the main solid product formed when baking soda is heated?The chlor-alkali process is carried out by electrolysis of what?What are the main products obtained in the chlor-alkali process?Which gas is formed at the anode in the chlor-alkali process?Which gas is formed at the cathode in the chlor-alkali process?Why should acids or bases not be identified by tasting them in a laboratory?If dry hydrogen chloride gas is passed over dry blue litmus paper, which conclusion is most correct?A gas produced by adding dilute hydrochloric acid to sodium carbonate solution is passed through limewater. Why does limewater first turn milky and then become clear when excess gas is passed?Two solutions X and Y have pH values 3 and 11 respectively. Which statement is correct?A gas is evolved when magnesium ribbon is added to dilute sulphuric acid. Which test is most suitable to identify this gas?A student thinks that only water is formed in an acid-base reaction. Why is this idea incomplete?When hydrochloric acid is slowly added to sodium hydroxide solution, how will the pH of the solution change?Why are metal oxides generally called basic oxides?What is the best reason for considering non-metal oxides as acidic oxides?While diluting a concentrated acid, acid should be added slowly to water. What is the main reason?In which condition will the concentration of hydrogen ions be highest?If an acidic solution is diluted ten times with water, which change is expected?