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Standard XII
Chemistry
Equivalent, Molar Conductivity and Cell Constant
Half life of ...
Question
Half life of a radioactive sample depends upon the initial number of nuclei present.
A
True
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B
False
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Solution
The correct option is
B
False
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Q.
A radioactive sample decays through two different decay process α decay and
β
decay. Half-life time for
α
decay is 3 h and half-life for β decay is 6 h. what will be the ratio of the number of initial radioactive nuclei to the number of radioactive nuclei present after 6h?
___
Q.
A radioactive sample decays through two different decay processes
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a
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and half-life time for
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Q.
In a radioactive sample the number of active nuclei remains 6.25% of its initial value in 6 hr . find the half life of radioactive sample.
Q.
In a sample of radioactive material what fraction of the initial number of active nuclei will remain undisintegrated after half of a half- life of sample?
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In a sample of radioactive material, what fraction of the initial number of active nuclei will remain disintegrated after half of the half-life of the sample?
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