Paper: CSIR-NET June 2016 · Subject: Physical Chemistry · Chapter: Data Analysis · Topic: Data Analysis – General · Marks: 2 · Difficulty: Hard
In a titration, the percentage uncertainties in the measured aliquot volume and the measured titre volume are $\pm \mathrm{x}$ and $\pm \mathrm{y}$ respectively. The percentage error in the calculated concentration of aliquot is
(a)$x+y$
(b)$x y$
(c)$\mathrm{xy}^{1 / 2}$
(d)$\left(x^{2}+y^{2}\right)^{1 / 2}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
For a quotient the relative uncertainties add in quadrature: √(x² + y²) %.