62" The time taken for "90%" of a first order reaction to complete is approximately "

The time taken for 90% of a first order reaction to be completed is approximately

The time for 90% of a first order reaction to complete is approximately

The time for 90% of a first order reaction to complete is approximately

The time taken for 90% of 1st order reaction to complete is approximately

The time of completion of 90% of a first order reaction is approximately

The time taken for the completion of "90%" of a first order reaction is 't' min. What is the time taken for the completion of "99%" of the reaction? (a) 2t (b) t/30 (c) 120t, (d) 60t