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An organic compound undergoes first order decomposition. If the time taken for the $$60\%$$ decomposition is $$540$$ s, then the time required for $$90\%$$ decomposition will be ______ s. (Nearest integer).
Given: $$\ln 10 = 2.3$$; $$\log 2 = 0.3$$
Correct Answer: 3
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