MHT CET 2025 5th May Evening Shift | Electrochemistry Question 1 | Chemistry

What is percent dissociation of $\mathrm{NH}_4 \mathrm{OH}$ if molar conductance at zero concentration for $\mathrm{NH}_4 \mathrm{Cl}$, NaCl and NaOH are 130, 109 and $213 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ respectively and molar conductivity of $0.01 \quad \mathrm{M} \quad \mathrm{NH}_4 \mathrm{OH}$ is $9.0 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ ?

$\frac{100}{40}$

$\frac{100}{35}$

$\frac{100}{32}$

$\frac{100}{26}$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

What is degree of dissociation of $\mathrm{CH}_3 \mathrm{COOH}$ if, $\wedge^{\circ}\left(\mathrm{CH}_3 \mathrm{COO}^{-}\right)=50 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$, $\wedge^{\circ}\left(\mathrm{H}^{+}\right)=350 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and molar conductivity of $5 \times 10^{-2} \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}$ is $20 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ ?

$1.25 \times 10^{-4}$

$5 \times 10^{-2}$

$1.25 \times 10^{-2}$

$5 \times 10^{-4}$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

What is the SI unit of resistivity?

$\Omega \mathrm{m}$

$\Omega \mathrm{m}^{-1}$

$\Omega^{-1} \mathrm{~m}^{-1}$

$\Omega \mathrm{m}^{-2}$

MHT CET 2025 26th April Evening Shift

MCQ (Single Correct Answer)

-0

What is reduction potential of hydrogen gas electrode when pure hydrogen gas is at I atmospheric pressure and platinum electrode is in contact with HCl solution of pH 1 at 298 K ?

-0.1184 V

-0.0592 V

-0.0296 V

-0.592 V

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