Q. Which of the following acts as a catalyst?
A) Metals with variable valency
B) Metals with non-variable valency
C) Non-metals with fixed valency
D) Inert gases
Explanation
(a)
Transitional metals, showing variable valency in finely divided state mostly acts as catalyst
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.