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Class 10 · Science
→If the pH of a solution increases from 3 to 6, what happens to its acidity?
Class 10 · Science
→Why is it considered dangerous to add water to acid during dilution?
Class 10 · Science
→A solution turns blue litmus red and gives a colourless gas with zinc metal. Which ion will mainly be present in this solution?
Class 10 · Science
→If a solution turns red litmus blue and shows pH 10, what is the most correct conclusion?
Class 10 · Science
→If a solution has pH less than 7 and releases gas with a metal carbonate, what could the solution be?
Class 10 · Science
→Which pair reacts to form a salt and hydrogen gas?
Class 10 · Science
→Which pair will mainly form salt and water, but gas is not necessarily formed?
Class 10 · Science
→Which pair will react to form salt, water and carbon dioxide?
Class 10 · Science
→When water is added to a basic solution, the number of hydroxide ions per unit volume decreases. What will be the effect on pH?
Class 10 · Science
→When water is added to an acidic solution, the number of hydrogen ions per unit volume decreases. What will be the effect on pH?
Class 10 · Science
→A universal indicator shows violet colour in a solution. What does this indicate?
Class 10 · Science
→A universal indicator shows orange colour in a solution. What could be the nature of the solution?
Class 10 · Science
→If a substance solution feels soapy and turns red litmus blue, what type is it?
Class 10 · Science
→If an aqueous solution of a substance tastes sour and turns blue litmus red, which category does it belong to?
Class 10 · Science
→A turmeric stain becomes reddish brown when soap is applied. This indicates which nature of soap?
Class 10 · Science
→Olfactory indicators give signals in acids and bases based on what change?
Class 10 · Science
→What is the safe method for diluting concentrated acid?
Class 10 · Science
→Why does the container become hot when acid is dissolved in water?
Class 10 · Science
→When can acid rain water be more harmful to aquatic organisms?
Class 10 · Science
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