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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

Which statement about indicators is the most correct?In which condition can a neutralisation reaction result in a nearly neutral solution?If suitable amounts of hydrochloric acid and sodium hydroxide are mixed, what will mainly be present in the final solution?What products are formed when an acid reacts with a metal hydrogen carbonate?Which salt is formed in the reaction between sodium hydrogen carbonate and hydrochloric acid?If a solution does not change the colour of either red or blue litmus paper, what is the most likely conclusion?Why is it wrong to identify acidic and basic substances by directly tasting them?What is the correct reason for adding concentrated sulphuric acid slowly to water during dilution?What happens to the number of hydrogen ions per unit volume when water is added to an acidic solution?What happens to the number of hydroxide ions per unit volume when water is added to a basic solution?One solution has pH 2 and another has pH 5. Both are acidic. Which one is more likely to be more corrosive?When universal indicator is added to a solution, the colour appears green. What is the nature of the solution?When zinc is added to an unknown solution, a gas is released and it gives a pop sound near a burning splint. What could be the nature of the solution?A student added acid to sodium carbonate. A gas was released and lime water turned milky. Which gas was it?If a base is slowly added to an acidic solution, in which direction can the colour of universal indicator change?Which substance provides hydrogen ions to show acidic properties when dissolved in water?Which of the following statements is correct for a base?In which condition can a salt solution be basic?In which condition can a salt solution be acidic?Which pair can generally form a salt that gives a neutral solution?