JEE Main 20207 Jan, Morning shiftChemistryMediumChemical Kinetics62× since 2002
During the nuclear explosion, one of the products is ⁹⁰Sr with half life of 6.93 years. If 1 g of ⁹⁰Sr was absorbed in the bones of newly born baby in placed of Ca, how much time, in years, is required to reduce much time, in year, is required to reduce it by 90% if it not lost metabolically.