CBSE Class 10 class10_chem_redox_energy — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 10 class10_chem_redox_energy in the app →Oxidation in chemistry means:Respiration is which kind of reaction?A reaction that gives out heat along with products is called:Which of these is given as an exothermic reaction?Respiration is described as which kind of process?Decomposition reactions need heat, electricity or:Heating copper powder in air forms a coating that is:The black coating formed on heated copper is copper:Passing hydrogen over heated copper oxide turns the coating:A substance that gains oxygen in a reaction is said to be:A substance that loses oxygen in a reaction is said to be:In the reaction with hydrogen, copper oxide is:Iron articles are shiny when new but later get coated with a powder:Corrosion causes damage to bridges, ships and objects made of:Why is corrosion of iron called a serious problem?Fats and oils that have been oxidised are described as:What changes when a fat turns rancid?Substances added to fatty foods to prevent oxidation are:Storing food in which containers slows oxidation?Chips packets are flushed with which gas?