MCQ
Effective collisions are those in which molecules must:
  • A
    Have energy equal to or greater than the threshold energy
  • B
    Have proper orientation
  • C
    Acquire the energy of activation
  • All of the above

Answer

Correct option: D.
All of the above
These are the characteristics of effective collisions.
Effective collisions are collision between two reactants with the appropriate orientation $\ \&\ $ with sufficient energy to overcome the activation energy barrier.
The number of effective collisions increases exponentially with an increase in temperature.

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