Question

For a first order reaction, the time required for completion of 90% reaction is 'x' times the half life of the reaction. The value of 'x' is (Given: ln 10 = 2.303 and log 2 = 0.3010) 

(A) 1.12 

(B) 2.43 

(C) 3.32 

(D) 33.31

Answer 1

Correct option is (C) 3.32