Q. Which acts as poison for Pd-charcoal in Lindlar’s catalyst?
A) $BaSO_{4}$
B) Quinoline
C) Both (a) and (b)
D) None of these
Explanation
(c)
Either $BaSO_{4}$ or Quinoline are used to reduce the activity of Pd-charcoal. The catalyst Pd-charcoal/$BaSO_{4}$ or Quinoline is used to hydrogenate alkyne to alkene only
$CH\ \equiv CH + H_{2}\ \overset{Lindlar^{'}s\ catalyst}{\rightarrow}\ CH_{2}\ = {CH}_{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.