Answer: honeycomb-like porous structure.
- A honeycomb-like porous structure
- B high metallic character
- C liquid physical state
- D strong magnetic property
Correct answer: A. honeycomb-like porous structure
Explanation: Their microporous cage structure admits only molecules of a suitable size and shape, giving shape-selective catalysis.
A typical adsorption isotherm: x/m (mass adsorbed per gram of adsorbent) rises steeply at low pressure, then flattens into a saturation plateau as the adsorbent surface fills up.
Concept context
Explore the chemistry that happens at interfaces, from catalysts that speed up industrial reactions to colloids like milk, smoke, and gels that surround us every day.