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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry1 Mark
MCQ
Finely powered or colloidal catalyst particles having small surface area are rich in free valencies.State whether the statement is True or False
  • A
    The statement is True.
  • ✓
    The statement is False.
  • C
    Neither.
  • D
    Finely powered or colloidal catalyst particles having large surface area are rich in free valencies.
✓

Answer

Correct option: B.
The statement is False.
Finely powered or colloidal catalyst particles having small surface area cannot be rich in free valencies. When the catalyst is finely powdered the surface area of the particle is small but total surface area is very large.

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