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Class 10 · Science
→Which pair has the first substance as an acidic oxide and the second as a basic oxide?
Class 10 · Science
→Which salt will show acidic nature in aqueous solution?
Class 10 · Science
→A substance turns red litmus blue but is only slightly soluble in water. What is the more correct term for it?
Class 10 · Science
→The temperature rises during the reaction between hydrochloric acid and sodium hydroxide. What does this show?
Class 10 · Science
→For which use is chlorine gas most suitably used?
Class 10 · Science
→Which gas is evolved at the cathode in the chlor-alkali process?
Class 10 · Science
→In the chlor-alkali process, which correct pair of products is obtained from aqueous sodium chloride solution?
Class 10 · Science
→Why is a mild edible acid mixed with baking soda in baking powder?
Class 10 · Science
→Why is sodium hydrogen carbonate used to make food items rise during cooking?
Class 10 · Science
→Why is plaster of Paris stored in a closed container away from moisture?
Class 10 · Science
→On heating blue vitriol, its blue colour turns white. On adding a few drops of water, the blue colour returns. What is the main reason?
Class 10 · Science
→Which pair contains substances that can both be used to reduce acidity?
Class 10 · Science
→If much heat is released while mixing acid with water, what is the safe method?
Class 10 · Science
→In which situation will a neutralisation reaction certainly occur?
Class 10 · Science
→A substance dissolves in water to produce hydroxide ions and feels soapy to touch. Which class does it belong to?
Class 10 · Science
→The pH of aqueous sodium chloride solution is nearly 7. What is the correct reason?
Class 10 · Science
→A student measures the pH of four solutions: 2, 6, 7, and 11. Which solution will have the highest hydroxide ion concentration?
Class 10 · Science
→When acid is added to a metal carbonate, the evolved gas turns lime water milky. What is the correct identification and reason?
Class 10 · Science
→Which product is not formed when baking soda is heated?
Class 10 · Science
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