According to Graham's Law, the speed (rate of diffusion) of a gas is inversely proportional to the square root of its density. Since oxygen is 16 times denser than hydrogen, hydrogen moves 4 times faster than oxygen.
Density of oxygen is about 16 times that of hydrogen. Therefore if speed of hydrogen is “x” then speed of oxygen:
Review the verified answer and explanation for this Engineering College Admission Test (ECAT) past-paper question on CampusFin.
Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.