Q. Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which is the best absorbing material for the carbon dioxide?
A) Heated copper oxide
B) Cold, solid calcium chloride
C) Cold, solid calcium hydroxide
D) Heated charcoal
Explanation
(c)
$CO_{2}$ get absorbed by $Ca(OH)_{2}$ to form insoluble $CaCO_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.