D-And F-Block Elements Ques 242
Question: Which transition metal reduces steam to evolve hydrogen
[MP PMT 2003; DCE 2002]
Options:
A) Mg
B) Fe
C) Sc
D) Pt
Show Answer
Answer:
Correct Answer: B
Solution:
Iron decomposes steam into hydrogen when it is passed over red hot iron $ 2Fe+3H_2O\to Fe_2O_3+3H_2\uparrow $