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

ScienceA student suggests identifying an acidic solution by taste. Why is this suggestion unacceptable in the laboratory?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceRed litmus turns blue in a solution, and after adding acid both red and blue litmus show no change. What is the nature of the final solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a student says acids should be identified only by taste, why is this method wrong?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceIn a solution phenolphthalein is colourless but methyl orange is yellow. What type of solution could it be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceMethyl orange turns red in a solution and phenolphthalein remains colourless. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceIf a solution turns red litmus blue and shows pH 10, what is the most correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA universal indicator shows orange colour in a solution. What could be the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium SciencePhenolphthalein turns pink and methyl orange turns yellow in a solution. What is the nature of this solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy is it wrong to identify acidic and basic substances by directly tasting them?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceWhich statement about indicators is the most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceA solution turns red litmus blue and gives pink colour with phenolphthalein. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceAn unknown solution turns blue litmus red and remains colourless with phenolphthalein. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceWhat colour does methyl orange generally show in a basic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceIf phenolphthalein remains colourless in a solution, which conclusion is the most careful one?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhat effect does a basic solution have on red litmus paper?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceWhat effect does an acidic solution have on blue litmus paper?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceWhich of the following substances does not change the colour of either red or blue litmus paper in an aqueous solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhich of the following substances is an olfactory indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA student dips red litmus paper into a soap solution. What colour will it turn?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceIn which of the following aqueous solutions does red litmus paper turn blue?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy