Chemistry - Chemical Kinetics Question with Solution | TestHub
ChemistryChemical KineticsFirst Order ReactionsMedium2 minQB
ChemistryMediumsingle choice
A radioactive element gives 3000 counts per minute at a given time. One hour later it gives 1500 counts per minute. What is the half-life of the element?
Options:
Answer:
C
Solution:
The activity halved (3000 to 1500 counts/min) in 1 hour. Half-life is the time for activity to halve. So, half-life = 60 minutes.
Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:First Order Reactions
⏱ 2mℹ️ Source: QB
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