Class 10 Science Chapter 1: NCERT Questions

NCERT Question 1

📅 Published: 9 April, 2025 🔁 Updated: 10 April, 2025 🕒 Read: 1 min

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

 

Answer:

(i) (a) and (b)

🔹 Explanation:

  • (a) Lead is getting reduced – ✅ Correct

  • (b) CO₂ is getting oxidised – ❌ Incorrect (CO₂ is already oxidised, not being oxidised)

  • (c) Carbon is getting oxidised – ✅ Correct

  • (d) Lead oxide is getting reduced – ✅ Correct

👉 Only (b) is wrong, but option (i) is the best available match.