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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 colour do blue copper sulphate crystals become on heating?What colour appears when water is added to white anhydrous copper sulphate?Which gas is formed when baking soda is heated?What is mixed with baking soda in baking powder?Which gas helps cakes and bread rise?Which gas helps put out fire in a soda acid fire extinguisher?Which solution is electrolysed in the chlor alkali process?Which gas is formed at the anode in the chlor alkali process?Which salt is used for washing clothes and for removing the permanent hardness of hard water?Which substance can be added to improve acidic soil?If a solution has pH 3, what effect will it have on blue litmus paper?If a solution has pH 10, what effect will it have on red litmus paper?Between solutions with pH 2 and pH 5, which one is more acidic?Between solutions with pH 8 and pH 12, which one is more basic?A student added phenolphthalein to a solution, and it became pink. What is the nature of the solution?Methyl orange became red in a solution. What is the correct conclusion about that solution?A drop of a solution made turmeric paper reddish-brown. What is the nature of the solution?Onion smell remains in one solution and decreases in another. What is the usual nature of the solution in which the smell decreases?Why does dry hydrogen chloride gas not turn dry blue litmus paper red?Why must an acid dissolve in water to show its acidic properties?