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Class 10 · Science · Medium
→Which of the following salts can turn blue litmus red in its aqueous solution?
Class 10 · Science · Medium
→The main difference between gypsum and plaster of Paris is related to what?
Class 10 · Science · Easy
→White anhydrous copper sulphate turns blue when water is added. What does this show?
Class 10 · Science · Medium
→Why does soap produce less lather with hard water while washing clothes?
Class 10 · Science · Easy
→Which is the correct matching for washing soda and baking soda?
Class 10 · Science · Medium
→Why can sodium hydrogen carbonate be used as an antacid?
Class 10 · Science · Medium
→What is the main role of the edible acid present in baking powder?
Class 10 · Science · Medium
→Why can the quality of bleaching powder decrease if it is kept exposed to air for a long time?
Class 10 · Science · Easy
→Why is the chlor-alkali process given this name?
Class 10 · Science · Medium
→In the electrolysis of brine in the chlor-alkali process, what is the correct order of gases formed at anode and cathode?
Class 10 · Science · Medium
→In which condition will aquatic organisms in a river or lake be at greater risk from acid rain?
Class 10 · Science · Medium
→What role do sulphur dioxide and nitrogen oxides play in acid rain?
Class 10 · Science · Medium
→Between equal concentration solutions of vinegar acid and hydrochloric acid, which can produce more ions?
Class 10 · Science · Medium
→The difference between a strong acid and a weak acid is mainly based on what?
Class 10 · Science · Medium
→Which statement about dilute acid and concentrated acid is correct?
Class 10 · Science · Easy
→Which substance increases the amount of hydroxide ions when dissolved in water?
Class 10 · Science · Medium
→Which salt is formed when calcium hydroxide reacts with hydrochloric acid?
Class 10 · Science · Medium
→Which salt is formed by complete neutralisation of sodium hydroxide and sulphuric acid?
Class 10 · Science · Medium
→Why does copper generally not produce hydrogen gas with dilute hydrochloric acid?
Class 10 · Science · Medium
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