28.5.11

WBJEE Chemistry Descriptive part-2011


WBJEE-2011
CHEMISTRY
DESCRIPTIVE TYPE QUESTIONS

Full Marks--10

1. The bacterial growth follows the rate law, dN/dt=KN where 'K' is a constant and 'N' is the number of bacteria at any time. If the population of bacteria (no. of cell) is doubled in 5 minutes, find the time by which the population will be eight times of the initial one......

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