1
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from following is NOT true about voltaic cell?

A
The anode acts as negative electrode.
B
The cathode acts as a positive electrode.
C
It converts electrical energy into chemical energy
D
Dry cell is an example of voltaic cell.
2
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate molar conductivity of $$\mathrm{NH}_4 \mathrm{OH}$$ at infinite dilution if molar conductivities of $$\mathrm{Ba}(\mathrm{OH})_2$$ $$\mathrm{BaCl}_2$$ and $$\mathrm{NH}_4 \mathrm{Cl}$$ at infinite dilution are $$520,280,129 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$ respectively.

A
$$249.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$498.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$125.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$369.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
3
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from the following expression represents molar conductivity of an electrolyte $$\mathrm{A}_2 B_3$$ type?

A
$$2 \lambda_{A^{+++}}^0+3 \lambda_{B^{--}}^0$$
B
$$3 \lambda_{A^{+++}}^0+2 \lambda_{B^{--}}^0$$
C
$$2 \lambda_{A^{+++}}^{\circ}+\lambda_{B^{--}}^{\circ}$$
D
$$\lambda_{A^{+++}}^{\circ}+3 \lambda_{B^{--}}^{\circ}$$
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the molar conductivity of $$0.005 \mathrm{~M} \mathrm{~NaI}$$ solution if it's conductivity is $$6.065 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^{-1} \text { ? }$$

A
$$121.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$115.1 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$126.5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$131.2 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
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