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Class10

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

ScienceWhy is it incorrect to identify the brown fumes observed on heating lead nitrate as oxygen?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2HardScienceWhen calcium carbonate is heated, the gas produced turns limewater milky. Which gas is it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceIn an unbalanced equation, oxygen atoms are fewer on the right side. What is the most correct method during balancing?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceTen grams of calcium carbonate is heated in a closed container. If no gas escapes, what will be the total mass of the products?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceDuring an unknown process in a closed container, the properties of a substance changed, a new substance was formed, and the total mass remained unchanged. What is the most appropriate conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceWhich option correctly states the position of reactants and products in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIn a chemical equation, in which situation is the symbol (aq) correctly used?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceWhich option gives the correct meaning of upward and downward arrows in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIf a white insoluble solid forms in a solution but the temperature does not change, what is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceWhich statement gives the clearest identification of a chemical reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1HardScienceA student placed an iron nail in blue copper sulphate solution and said, “Copper is more reactive than iron, so copper gets deposited on the nail.” Which is the correct correction to this statement?Class 10Metals and Non-metalsReactivity seriesLevel 1HardScienceWhy is conversion of milk into curd considered a chemical change in advanced questions?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceWhat is the correct reason for considering photosynthesis an energy-absorbing process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceIf heat is written with the reactants in a reaction, what is the correct meaning?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIf heat is written on the product side of a chemical equation, what does it mean?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIf the container becomes cold and a gas also evolves in a reaction, what is the most careful conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1MediumScienceFilling chips packets with nitrogen gas reduces which chemical problem?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1HardScienceOne iron nail is kept in a dry, airtight bottle and another nail is kept in moist open air. Which nail will rust faster?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1HardScienceWhat is a reaction called in which hydrogen is removed from a substance or oxygen is added to it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceWhat is the process called in which hydrogen is added to a substance or oxygen is removed from it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard

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