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Class 10 · Science · Easy
→When copper oxide is heated with hydrogen what happens to copper oxide?
Class 10 · Science · Easy
→What is a reaction called in which one substance is oxidised and another substance is reduced simultaneously?
Class 10 · Science · Easy
→What generally happens during reduction?
Class 10 · Science · Easy
→What generally happens during oxidation?
Class 10 · Science · Easy
→What is a reaction called in which heat is absorbed?
Class 10 · Science · Easy
→What is a chemical reaction called in which heat energy is released to the surroundings?
Class 10 · Science · Easy
→What is released when glucose breaks down during respiration?
Class 10 · Science · Easy
→A combustion reaction is generally what type of reaction?
Class 10 · Science · Easy
→In a combustion reaction, fuel reacts with which gas?
Class 10 · Science · Easy
→What mainly happens in a double displacement reaction?
Class 10 · Science · Easy
→Which insoluble product forms as a white precipitate when aqueous sodium sulphate reacts with aqueous barium chloride?
Class 10 · Science · Easy
→When two aqueous solutions are mixed and an insoluble white solid forms and separates out, what is the solid called?
Class 10 · Science · Easy
→When an iron nail is placed in copper sulphate solution, the pale green solution formed mainly contains which substance?
Class 10 · Science · Easy
→When an iron nail is placed in copper sulphate solution, what is the reddish-brown coating formed on the nail?
Class 10 · Science · Easy
→In a metal displacement reaction, which metal displaces another metal from its compound or salt solution?
Class 10 · Science · Easy
→Which metal is produced when silver chloride decomposes in sunlight?
Class 10 · Science · Easy
→In a photolytic decomposition reaction, what supplies the energy needed to decompose a compound?
Class 10 · Science · Easy
→In an electrolytic decomposition reaction, in which form is energy supplied to decompose a compound?
Class 10 · Science · Easy
→Which is a correct example of a decomposition reaction caused by heating?
Class 10 · Science · Easy
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