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← JEE Main 2022 · 25 Jul · Shift 1
ChemistryInteger+4 / -1Question 85 of 90

JEE Main 2022 · 25 Jul · Shift 1, Chemistry question 85

The half life for the decomposition of gaseous compound A is 240 s when the gaseous pressure was 500 Torr initially. When the pressure was 250 Torr, the half life was found to be 4.0 min. The order of the reaction is ______. (Nearest integer)

Answer and worked solution

Official answer: 1

Half life stays 240 s when the pressure halves, so it is independent of concentration: first order.

Answer: 1