Which of the following is Lindlar catalyst?

Question:

Which of the following is Lindlar catalyst?

  1. Zinc chloride and $\mathrm{HCl}$

  2. Cold dilute solution of $\mathrm{KMnO}_{4}$

  3. Sodium and Liquid $\mathrm{NH}_{3}$

  4.  Partially deactivated palladised charcoal


Correct Option:

Solution:

Partially deactivated palladised charcoal $\left(\mathrm{H}_{2} / \mathrm{pd} / \mathrm{CaCO}_{3}\right)$ is lindlar catalyst.

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