A student performs a titration with different burettes and finds … - Vidyadip

MCQ

A student performs a titration with different burettes and finds titre values of $25.2 \mathrm{~mL}, 25.25 \mathrm{~mL}$ and $25.0$ $\mathrm{mL}$. The number of significant figures in the average titre value is

✓
$3$
B
$2$
C
$1$
D
$9$

✓

Answer

Correct option: A.

$3$

a
We have $25.20,25.25$ and $25.00$ ml .

$\text { Average }=\frac{25.20+25.25+25.00}{3}$

$=\frac{75.45}{3}$

$=25.15=25.1$

In case of division, the final answer will contain as many significant figures as there are in an number with least significant numbers.

So, the significant number is $3$ .

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