CGPET 2011 Solved Paper

Section: Chemistry

Question : 78 of 150

Marks: +1, -0

The thermal decomposition of a compound is of first order. If a sample of the compound decomposes 50% in 120‌min, what time will it take to undergo 90% decomposition?

Nearly 400‌min
Nearly 45‌min
Nearly 480 min
Nearly 240 min

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