Chemical Kinetics Part 1

The inactivation rate of a viral preparation is proportional to the amount of virus. In the first minute after preparation, 10% of the virus is inactivated. The rate constant for viral inactivation is __________×10−3min−1. (Nearest integer)
[Use : ln‌10=2.303;log103=0.477;property of logarithm :log‌xy=y‌log‌x]