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 .
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 $3$ .
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with $Fe ^{3+}$ due to the formation of-
→Arrange the following radical order of decreasing stability
Which of the following compounds will show highest dipole moment ?
A spontaneous reaction occurs:
Which reacts with ammoniacal $AgN{O_3}$
→The normality of $H _{2} SO _{4}$ in the solution obtained on mixing $100 mL$ of $0.1\,M H _{2} SO _{4}$ with $50 mL$ of $0.1$ $M\,NaOH$ is $\times 10^{-1}\,N$. (Nearest Integer)
→Which of the following isomeric structure have lowest energy?
The equilibrium
→$S{O_2}C{l_2}(g)\, \rightleftharpoons S{O_2}(g)\, + \,C{l_2}(g)$
is attained at $25\,^oC$ in a closed container and inert gas helium is introduced at constant volume. Which of the following statements are not correct
$(a)$ Concentrations of $SO_2, Cl_2$ and $SO_2Cl_2$ change
$(b)$ More chlorine is formed
$(c)$ Concentration of $SO_2$ is reduced
$(d)$ More $SO_2Cl_2$ is formed
How many representations of lactic acid are possible in Fischer projection $(d $ & $l)$ ?
→Low visibility during cold weather is due to $ ..........$
→