Q. Which acts as poison to platinum (a catalyst) in the manufacture of $H_{2}SO_{4}$ by contact process?
A) Arsenious oxide
B) $CO_{2}$
C) CO
D) Sodium sulphide
Explanation
(a)
$As_{2}O_{3}$ gets adsorbed on active centres of Pt.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.