Question

4. Reactive metals are good reducing agents. The most suitable exam
related to this is
A) PbO + C - Pb + CO
B) 3MnO2 + 4A1- 2Al2O3 + 3Mn
C) ZnO +
Zn + CO
D) CuO + H2 Cu + H2O​

Answer 1

Answer:

Reactive metals are good reducing agents. The most suitable example

related to this is

ZnO +

Zn + CO

Answer 2

NOTE - The correct options for the question are :

A) PbO + C →  Pb + CO

B) 3MnO₂ + 4A1 → 2Al₂O₃ + 3Mn

C) ZnO + C → Zn + CO

D) CuO + H₂ → Cu + H₂O

The most suitable example for illustrating that reactive metals are good reducing agents is option (B), 3MnO₂ + 4A1 → 2Al₂O₃ + 3Mn

• Reduction is the process in which a compound loses its oxygen atom/s.

• A substance which reduces another substance is called a reducing agent.

• A reducing agent itself gets oxidised.

• In option (A), PbO oxidises C to CO, and itself gets reduced to Pb. Therefore, PbO is not a reducing agent.

• In option (B), Al reduces MnO₂ to Mn, and itself gets oxidised to Al₂O₃. Therefore, Al is a reducing agent.

• In option (C), ZnO oxidises C to CO, and itself gets reduced to Zn. Therefore, ZnO is not a reducing agent.

• In option (D), CuO oxidises H₂ to H₂O, and itself gets reduced to Cu. Therefore, CuO is not a reducing agent.