$4.061 \times 10^{-19} \mathrm{~J}$
$4.969 \times 10^{-19} \mathrm{~J}$
$5.226 \times 10^{-19} \mathrm{~J}$
$4.118 \times 10^{-19} \mathrm{~J}$
The conductivity of 0.1 M KCl solution at $23^{\circ} \mathrm{C}$ is $0.012 \Omega^{-1} \mathrm{~cm}^{-1}$.
Resistance of a cell containing the solution at same temperature was found to be $50 \Omega$. Calculate the cell constant.
$0.60 \mathrm{~cm}^{-1}$
$2.4 \times 10^{-4} \mathrm{~cm}^{-1}$
$6.0 \times 10^{-4} \mathrm{~cm}^{-1}$
$2.4 \times 10^{-2} \mathrm{~cm}^{-1}$
$60 \%$ of a first order reaction is completed in 60 minute. What is the time taken by reactant to decompose half of its original amount?
30.6 minute
20.2 minute
45.3 minute
60.1 minute
The osmotic pressure of equimolar concentration of $\mathrm{CaCl}_2$ and urea at same temperature are 0.6 atm and 0.25 atm respectively. Calculate van't Hoff factor for $\mathrm{CaCl}_2$.
2.0
2.4
2.7
3.0
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