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And Salts

Class 10 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceIn a reaction, mixing an acid and a base increases the solution temperature. How should this be understood?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA student says all salts are neutral. Which example disproves this statement?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhich substance is used for bleaching clothes and wood pulp?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhich substance is used to disinfect water because it can provide chlorine?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhy does foam form when baking soda and vinegar are mixed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWashing soda softens hard water. Removal of which ions gives this effect?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceIf a solution turns red indicator paper blue and phenolphthalein pink, which pH is most likely?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy SciencePhenolphthalein is added to a colourless solution and it turns pink. On adding acid, the colour disappears. What does this show?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceMethyl orange appears red in acidic solution and yellow in basic solution. What is this property used for?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhich reaction causes corrosion of marble by acid rain?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA farmer finds soil pH to be 9. Why may adding organic manure be advised?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA farmer tests soil and finds its pH to be 5. Which measure is suitable to improve crop growth?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceAn acidic substance in an ant sting causes irritation. Which substance is most suitable?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhy is very low pH in the mouth dangerous for tooth decay?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA person has indigestion due to excess acidity. Which substance would be most suitable for relief?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhy may excessive heating of gypsum reduce the useful setting property of plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy should plaster of Paris be used quickly after mixing with water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy does the solution near the cathode become basic in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceWhat happens at the anode in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceWhy is electrolysis of brine important in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard