In isotope dilution method for the determination of iron, W₀ g of iron as ⁵⁹FeCl₃, that has a specific… · ABC26GN5853

Subject: General Aptitude · Chapter: Isotope Dilution Analysis · Topic: Isotope dilution analysis · Exam: BHU Post-graduate Entrance Test 2014 · Marks: 2 · Difficulty: Medium

In isotope dilution method for the determination of iron, $W_0$ g of iron as $^{59}\mathrm{FeCl}_3$, that has a specific activity $A_0$, was mixed so that $^{59}\mathrm{Fe}$ is equally distributed throughout the sample. A portion of the total iron is then isolated in a pure weighable form that has the specific activity $A_1$. If the original sample contained $W_1$ g of iron, then the fraction of initial activity found in this portion can be expressed as :
(a)$W_1 = W_0\left(\frac{A_0}{A_1}-1\right)$
(b)$W_1 = W_0\left(1-\frac{A_0}{A_1}\right)$
(c)$W_0 = W_1\left(\frac{A_0}{A_1}-1\right)$
(d)$W_0 = W_1\left(1-\frac{A_0}{A_1}\right)$
Answer
Answer (as printed): A
Explanation
No explanation was printed for this question.

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