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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 is the role of hydroxide ions in showing basic properties?Why can adding water to acid be dangerous while diluting acid?The slow addition of acid to water is related to which energy change?What is the correct identification of the gas formed when zinc reacts with dilute hydrochloric acid?In the general reaction of an acid and a metal, what forms along with salt?How is the gas formed in the reaction of an acid and metal carbonate identified?Which products are likely to form when sodium carbonate reacts with dilute acid?Why does effervescence occur when acid is added to sodium hydrogen carbonate?How does sodium chloride form in the reaction of hydrochloric acid and sodium hydroxide?Why do the effects of acid and base decrease in a neutralisation reaction?If a base is slowly added to an acidic solution, what generally happens to its pH?If acid is added to a basic solution, in which direction will its pH generally move?How does an antacid provide relief during excess acidity in the stomach?Why is milk of magnesia useful for relieving stomach acidity?Why is a mouth pH below 5.5 harmful in relation to tooth decay?What is the main purpose of keeping toothpaste mildly basic?Why can applying a mild baking-soda solution to an ant sting provide relief?Why do farmers add slaked lime to acidic soil?How can adding organic matter help improve basic soil?Which process is used to prepare sodium hydroxide from sodium chloride?