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  4. Assertion: Effusion rate of oxygen is smaller than nitrogen. Reason: Molecular size of nitrogen is smaller than oxygen.

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Q. Assertion: Effusion rate of oxygen is smaller than nitrogen. Reason: Molecular size of nitrogen is smaller than oxygen.

VMMC MedicalVMMC Medical 2005

Solution:

Effusion rate of oxygen is smaller than nitrogen due to higher molecular weight of $ {{\text{O}}_{\text{2}}}\text{.} $ Molecular size of nitrogen is greater than oxygen as size decrease in a period from left to right.