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Class 10 · Science
→Which pair gives the correct salt and its use?
Class 10 · Science
→Which pair correctly matches an acid with its natural source?
Class 10 · Science
→What is the colour of methyl orange in acidic solution and why is it useful?
Class 10 · Science
→Why can all alkalis be called bases, but all bases cannot be called alkalis?
Class 10 · Science
→Which statement about bases is the most correct?
Class 10 · Science
→Which statement about acids is the most correct?
Class 10 · Science
→How does acid rain damage marble buildings?
Class 10 · Science
→What is the main harm when acidic waste is released directly into water bodies?
Class 10 · Science
→A student added acid to a metal carbonate and passed the gas through lime water. What is the correct observation?
Class 10 · Science
→Why does effervescence occur when acid is added to sodium hydrogen carbonate?
Class 10 · Science
→What else is formed along with salt when hydrochloric acid reacts with sodium carbonate?
Class 10 · Science
→Which gas is produced at the anode in the chlor-alkali process?
Class 10 · Science
→Which gas is produced at the cathode in the chlor-alkali process?
Class 10 · Science
→Which gases are also formed when sodium hydroxide is prepared from sodium chloride solution by electrolysis?
Class 10 · Science
→Why does white anhydrous copper sulphate turn blue again when water is added?
Class 10 · Science
→Why do blue copper sulphate crystals become white on heating?
Class 10 · Science
→Why is Plaster of Paris kept away from moisture?
Class 10 · Science
→Why is gypsum heated at a controlled temperature rather than at too high a temperature?
Class 10 · Science
→Why is bleaching powder used in cleaning drinking water?
Class 10 · Science
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