Question

Which of the following statements is true if red hot iron is reacted with steam?

• A. It forms triferric tetra oxide and releases hydrogen gas
• B. It's a reversible reaction if hydrogen isn't separated
• C. Iron is more reactive than zinc
• D. Iron oxide formed reacts with hydrogen and reduces back to iron.

Answer 1

Answer: (A), (B), (D)

The correct options are
A

It forms triferric tetra oxide and releases hydrogen gas

B

It's a reversible reaction if hydrogen isn't separated

D

Iron oxide formed reacts with hydrogen and reduces back to iron.

When red-hot iron reacts with steam it forms triferric tetra oxide and hydrogen.

$3Fe+4H_{2}O\rightleftharpoons F{e}_3{O}_4+H_2\uparrow$

If the hydrogen formed is not removed, the iron oxide formed is reduced back to iron.