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Conservation Of Mass

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

ScienceWhy is a chemical equation balanced?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIf the reactants and products are correct but the atoms of one element are unequal, what is the conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5MediumScienceWhat is the main difference between a skeletal equation and a balanced equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceWhich statement best explains the scientific need for a balanced chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5MediumScienceWhy can a lower measured mass after gas escapes from an open container give a wrong conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceIn a closed container, gas and a precipitate both form during a reaction, but nothing escapes. What is the correct conclusion about mass?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5MediumScienceIn an unknown process a new substance formed gas evolved and total mass remained same in a closed container. What is the most suitable conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhat is the deepest reason for keeping atoms of all elements equal on both sides of a balanced chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4HardScienceAfter a reaction in an open container, the measured mass appears lower because a gas produced has escaped. What is the correct scientific explanation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4HardScienceIn a closed container, a chemical reaction produces a gas and the temperature rises, but no matter escapes. What is the correct conclusion about the total mass of the container and its contents before and after the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceIf the number of atoms of any one element is not the same on the reactant and product sides of a chemical equation, what is the equation called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3ExpertScienceWhile balancing a chemical equation, the number of atoms of each element is kept the same on the reactant and product sides. Which law does this demonstrate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3ExpertScienceWhy is measuring less mass after gas escapes from an open container not against conservation of mass?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceIn a closed container a metal reacts with acid and gas forms but does not escape. What is the most suitable conclusion about total mass?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceIn an unknown process, a new substance was formed, the colour changed, and the total mass remained the same in a closed container. What is the most appropriate conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2ExpertScienceIf a chemical equation has the same number of hydrogen atoms on both sides but an unequal number of oxygen atoms, what is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2ExpertScienceIn an open container, the measured mass after a reaction is lower because a gas produced escapes. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2ExpertScienceWhich arrangement is most suitable for demonstrating the law of conservation of mass experimentally?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2ExpertScienceWhat is the main reason for keeping atoms of every element equal on both sides of a balanced equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceDuring a reaction in an open container, if a produced gas escapes, why can the measured mass of the container and its remaining contents appear to decrease?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Expert