JEE Main 2015 Chemistry question

Higher order (>3) reactions are rare due to:

(1)Loss of active species on collision.
(2)Low probability of simultaneous collision of all the reacting species.Correct
(3)Increase in entropy and activation energy as more molecules are involved.
(4)Shifting of equilibrium towards reactants due to elastic collisions.

Answer: (2)

Solution

An elementary step of order n requires n molecules to meet at the same instant with the right orientation and energy. The chance of such a

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Question ID VK-115178