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Class 10 · Science · Medium
→Why is zinc oxide called amphoteric?
Class 10 · Science · Medium
→Which oxide can react with both acids and bases?
Class 10 · Science · Medium
→Non-metal oxides can form acidic solutions in water. Which of the following is an example?
Class 10 · Science · Medium
→A metal oxide reacts with an acid to form salt and water. Which nature does this show?
Class 10 · Science · Medium
→Why is sodium chloride solution generally considered neutral?
Class 10 · Science · Medium
→A sodium carbonate solution can turn red litmus blue. What type of salt is it?
Class 10 · Science · Medium
→An aqueous solution of ammonium chloride can turn blue litmus red. What is the reason?
Class 10 · Science · Medium
→If a salt solution has no effect on either blue or red litmus paper, what may be its approximate pH?
Class 10 · Science · Medium
→Which is the correct group of three main products obtained in the chlor-alkali process?
Class 10 · Science · Medium
→Which process is used to obtain sodium hydroxide from common salt?
Class 10 · Science · Medium
→Due to which property is bleaching powder used in water purification?
Class 10 · Science · Medium
→How does washing soda help in softening hard water?
Class 10 · Science · Medium
→What is the main benefit of adding a mild edible acid with baking soda in baking powder?
Class 10 · Science · Medium
→Why can sodium hydrogen carbonate be used in fire extinguishers?
Class 10 · Science · Medium
→An antacid taken for excess stomach acid works on which principle?
Class 10 · Science · Medium
→The condition that damages tooth enamel is related to which of the following?
Class 10 · Science · Medium
→Which substance can be added to basic soil so that acidic substances may gradually form?
Class 10 · Science · Medium
→Which substance is most suitable for treating acidic soil?
Class 10 · Science · Medium
→Which substance will react with an acid to give carbon dioxide instead of hydrogen?
Class 10 · Science · Medium
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