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Redox

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

ScienceWhich of the following reactions is both a displacement reaction and an oxidation-reduction reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5MediumScienceWhy do oxidation and reduction occur together in a redox reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5MediumScienceWhich statement about oxidation and reduction is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2ExpertScienceIn a chemical reaction, oxygen is removed from substance A and the same oxygen is added to substance B. What is the most appropriate classification of this reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceIn which situation is a substance oxidised?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2HardScienceOne substance loses oxygen and another substance gains that oxygen. What is the most accurate term for this reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2HardScienceWhy is the conversion of copper oxide into copper called reduction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2EasyScienceWhat 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 1EasyScienceWhen copper oxide is converted into copper, which process takes place?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceIf hydrogen is removed from a substance, which process is it generally considered to be?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2EasyScienceWhen hydrogen gas is passed over heated copper(II) oxide, the black copper(II) oxide changes into reddish-brown copper. Which statement correctly describes this reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhich process occurs to copper(II) oxide when hydrogen gas is passed over heated copper(II) oxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 7EasyScienceWhat is a substance called when oxygen is added to it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6EasyScienceWhat generally happens during oxidation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy