Question

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

• A. $3$
• B. $4$
• C. $2$
• D. none of the above

Answer 1

The correct option is A $3$

The total values of titration $25.2+25.25+25.0=75.7$ will be upto only one decimal point and contain $3$ significant figures.

The avrage titre value $\frac{75.5}{3}=25.15=25.2$ mL will contain $3$ significant figures.

Hence, the number of significant figures in the average titre value is $3$.

Hence, the correct option is $A$