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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 is a mild edible acid mixed with baking soda in baking powder?In the chlor-alkali process, which correct pair of products is obtained from aqueous sodium chloride solution?Which gas is evolved at the cathode in the chlor-alkali process?For which use is chlorine gas most suitably used?The temperature rises during the reaction between hydrochloric acid and sodium hydroxide. What does this show?A substance turns red litmus blue but is only slightly soluble in water. What is the more correct term for it?Which salt will show acidic nature in aqueous solution?Which pair has the first substance as an acidic oxide and the second as a basic oxide?Which reaction shows the reaction between an acidic oxide and a base?Which substance contains water of crystallisation?What is the formula of washing soda?Which is the formula of plaster of Paris?Gypsum forms plaster of Paris on controlled heating. If it is overheated, what main problem may occur?Which substance is used to soften hard water?Why is it dangerous to touch sodium hydroxide with bare hands?A bee sting is described as containing an acidic substance. Which substance is most suitable for helping to reduce its effect?A wasp sting contains a basic substance. Which substance can be useful to reduce the pain?Why is an antacid given when excess acid is produced in the stomach?A solution conducts electricity well and turns blue litmus red. The presence of which ions does this indicate?Which aqueous solution will conduct electricity because ions are formed in it?