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Class 10 · Science
→In a solution, methyl orange becomes yellow and phenolphthalein becomes pink. What is the nature of the solution?
Class 10 · Science
→Which experiment proves that water is needed to show acidic properties?
Class 10 · Science
→Sulphur dioxide can dissolve in water to form an acidic solution. What type of oxide does this prove sulphur dioxide to be?
Class 10 · Science
→What is formed when magnesium oxide reacts with hydrochloric acid?
Class 10 · Science
→Which salt is formed in the reaction between potassium hydroxide and hydrochloric acid?
Class 10 · Science
→Which salt is formed when sodium hydroxide reacts with nitric acid?
Class 10 · Science
→Which pair can generally form a salt that gives a neutral solution?
Class 10 · Science
→In which condition can a salt solution be acidic?
Class 10 · Science
→In which condition can a salt solution be basic?
Class 10 · Science
→Which of the following statements is correct for a base?
Class 10 · Science
→Which substance provides hydrogen ions to show acidic properties when dissolved in water?
Class 10 · Science
→If a base is slowly added to an acidic solution, in which direction can the colour of universal indicator change?
Class 10 · Science
→A student added acid to sodium carbonate. A gas was released and lime water turned milky. Which gas was it?
Class 10 · Science
→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?
Class 10 · Science
→When universal indicator is added to a solution, the colour appears green. What is the nature of the solution?
Class 10 · Science
→One solution has pH 2 and another has pH 5. Both are acidic. Which one is more likely to be more corrosive?
Class 10 · Science
→What happens to the number of hydroxide ions per unit volume when water is added to a basic solution?
Class 10 · Science
→What happens to the number of hydrogen ions per unit volume when water is added to an acidic solution?
Class 10 · Science
→What is the correct reason for adding concentrated sulphuric acid slowly to water during dilution?
Class 10 · Science
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