Which of the statements about the reaction below are incorrect? 2PbO(s) + C(s) → 2Pb(s) + CO2(g) (a) Lead is getting reduced (b) Carbon Dioxide is getting oxidised (c) Carbon is getting oxidised (d) Lead oxide is getting reduced (i) (a) and (b) (ii) (a) and (c) (iii) (a), (b) and (c) (iv) all the above
ScienceClass 10CBSEAnswered 27 Mar 2026
Answer
(i) (a) and (b)
Explanation: (a) Because Oxygen is being removed and (b) Because the removed oxygen from Lead is added to the elemental Carbon.
Suggested Q&A
Science · Class 10- ScienceClass 10What is hybridization? What are its types, with an example?
- ScienceClass 10Explain the following terms with one example each. (a) Corrosion (b) Rancidity
- ScienceClass 10Translate the following statements into chemical equations and balance them. (a) Hydrogen gas combines with nitrogen to form ammonia. (b) Hydrogen sulphide gas burns in the air to give water and sulphur dioxide. (c) Barium chloride reacts with aluminium sulphate to give Aluminium chloride and a precipitate of barium sulphate. (d) Potassium metal reacts with water to give potassium hydroxide and Hydrogen gas.
- ScienceClass 10What is a balanced chemical equation? Why should a chemical equation be balanced?
- ScienceClass 10What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer. 1. Hydrogen gas and Iron chloride are produced. 2. Chlorine gas and Iron hydroxide are produced. 3. No reaction takes place. 4. Iron salt and water are produced.
- ScienceClass 10Fe2O3 + 2Al → Al2O3 + 2Fe The above reaction is an example of a 1. Combination reaction 2. Double displacement reaction 3. Decomposition reaction 4. Displacement reaction
- ScienceClass 10Identify the substances that are oxidised and that are reduced in the following equation.
- ScienceClass 10Give an example of a double displacement reaction other than the one given in Activity 1.10.
- ScienceClass 10Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
- ScienceClass 10Why is the amount of gas collected in one of the test tubes in Activity 1.7 double the amount collected in the other? Name this gas.