Download App

Electro Chemistry — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryElectro Chemistry1 Mark
MCQ
A conductivity cell has been calibrated with a $0.01 M , 1: 1$ electrolytic solution (specific conductance $\left(\kappa=1.25 \times 10^{-3}\right.$ $S cm ^{-1}$ ) in the cell and the measured resistance was $800 \Omega$ at $25^{\circ} C$. The cell constant is, .........
  • A
    $10^{-1} cm^{-1}$
  • B
    $10^1 cm^{-1}$
  • ✓
    $1 cm^{-1}$
  • D
    $5.7 \times 10^{-12}$
✓

Answer

Correct option: C.
$1 cm^{-1}$
A conductivity cell has been calibrated with a $0.01 M , 1: 1$ electrolytic solution (specific conductance ( $k$ $=1.25 \times 10^{-3} S cm ^{-1}$ ) in the cell and the measured resistance was $800 \Omega$ at $25^{\circ} C$. The cell constant is, $1 cm ^{-1}$.
Explanation:
$
\begin{aligned}
& R =\rho \cdot \frac{ l }{ A } \\
& \text { cell constant }=\frac{ R }{\rho} \\
& =\kappa \cdot R\left(\frac{1}{\rho}=\kappa\right) \\
& =1.25 \times 10^{-3} \Omega^{-1} cm ^{-1} \times 800 \Omega \\
& =1 cm ^{-1}
\end{aligned}
$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer." from Electro Chemistry→Electro Chemistry — all question types→Chemistry STD 12 question papers→Tamilnadu Board STD 12 question papers→Tamilnadu Board question paper generator→

Similar questions

Electrophiles are usually ……….
→
The acetylation and benzoylation of phenol are called ……….
→
Conductivity of a saturated solution of a sparingly soluble salt AB ( 1 : 1 electrolyte) at $298 K$ is $1.85 \times$ $10^{-5} S m ^{-1}$. Solubility product of the salt $AB$ at $298 K \left(\Lambda_{ m }^{\circ}\right)_{ AB }=14 \times 10^{-3} S m ^2 mol ^{-1}$.
→
The helical structure of protein is stablized by ………………
→
The reaction of benzaldehyde with 50% NaOH is called …………..
→
Find out the odd incorrect pair :
→
Oxidation state of $N m FINO _3$ is…………
→
When ammonia reacts with copper sulphate solution to give complex, the colour of complex is …………
→
Adsorption is always …………
→
Which one of the following is a polysaccharide?
→