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Class 10 · Science
→What does writing sunlight above the arrow in the following photosynthesis equation indicate? \(6CO_2 + 6H_2O \xrightarrow{\text{sunlight}} C_6H_{12}O_6 + 6O_2\)
Class 10 · Science
→Which fact should be considered while identifying a similarity between respiration and combustion?
Class 10 · Science
→What type of reaction is represented by the following general equation? \[ A+B\rightarrow C+\text{heat} \]
Class 10 · Science
→If, in a reaction, a single compound absorbs heat and forms two or more products, what is the most appropriate classification of the reaction?
Class 10 · Science
→If the reaction mixture is not heated externally, which observation strongly suggests an exothermic reaction?
Class 10 · Science
→During a chemical reaction, which observation indicates that it is endothermic?
Class 10 · Science
→If a food packet contains more oxygen and is stored at a higher temperature, which problem becomes more likely?
Class 10 · Science
→Why are antioxidants useful in foods containing oils and fats?
Class 10 · Science
→How does filling nitrogen in chips packets affect the role of oxygen?
Class 10 · Science
→Which process can become faster when edible oil is kept in an open bottle and exposed to oxygen in air?
Class 10 · Science
→What is the similarity between galvanisation and painting?
Class 10 · Science
→Which of the following reactions involves both oxidation and reduction occurring simultaneously?
Class 10 · Science
→What role does moisture play in the rusting of iron?
Class 10 · Science
→In which situation is a substance oxidised?
Class 10 · Science
→In which situation will a substance be reduced?
Class 10 · Science
→One substance loses oxygen and another substance gains that oxygen. What is the most accurate term for this reaction?
Class 10 · Science
→Why is the conversion of copper oxide into copper called reduction?
Class 10 · Science
→In the reaction CuO + H₂ → Cu + H₂O, the formation of water proves the oxidation of which substance?
Class 10 · Science
→When aqueous solutions of two ionic compounds are mixed, an insoluble solid forms. This is an example of which type of reaction?
Class 10 · Science
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