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Chemical Substances Nature And Behaviour

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

ScienceIf pH is less than 7 but not very close to zero, what is the most balanced conclusion about the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhy is sodium carbonate used to soften hard water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceAn acid reacts with a metal to produce a gas that gives a pop sound near a burning splint. Which gas is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Easy ScienceWhich option contains a group of basic substances?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Easy ScienceWhich option contains a group of acidic substances?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Easy ScienceA colourless solution conducts electricity, but the dry substance does not affect litmus. What condition is necessary for acidic behaviour?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Hard ScienceWhich substance is used to disinfect drinking water and can release chlorine?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceThe formation of only salt and water in an acid-base reaction best represents which idea?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhy can the purity of sodium hydroxide decrease when it is left exposed to air?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhat happens to hydrogen-ion concentration when water is added to an acidic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceIf an unknown salt solution has pH 9, what is its most probable formation condition?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Hard ScienceWhy is limewater useful for identifying carbon dioxide in the laboratory?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhich pair correctly lists products obtained from common salt in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhich observation provides experimental evidence that an acidic solution contains ions?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceIf the amount of hydroxide ions in a solution is increased, what will happen to its pH?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceSodium chloride is a salt formed from acidic and basic sources. Why is the pH of its aqueous solution about 7?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceA solution has pH close to 14. Why can touching it be dangerous?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Easy ScienceAll bases are not soluble in water. Which statement is most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceIn which situation is hydrogen gas most likely to be formed?Class 10Chemical Substances – Nature and BehaviourMetals and Non-metalsLevel 6Medium ScienceWhy does heating gypsum at about 373 K produce plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium