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1
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

If resistivity of 0.8 M KCl solution is $$2.5 \times 10^{-3} \Omega \mathrm{~cm}$$. Calculate molar conductivity solution?

A
$$2 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$5 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$4 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$3 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
2
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

How many electrons are involved in the reaction, when $$0.40 \mathrm{~F}$$ of electricity is passed through an electrolytic solution?

A
$$6.642 \times 10^{25}$$
B
$$1.505 \times 10^{24}$$
C
$$6.022 \times 10^{23}$$
D
$$2.4088 \times 10^{23}$$
3
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

What will be the concentration of $$\mathrm{NaCl}$$ solution, if the molar conductivity and conductivity of $$\mathrm{NaCl}$$ solution is $$124.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$ and $$1.243 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^2$$ respectively?

A
$$0.1 \mathrm{~mol} \mathrm{~L}^{-1}$$
B
$$0.001 \mathrm{~mol} \mathrm{~L}^{-1}$$
C
$$0.01 \mathrm{~mol} \mathrm{~L}^{-1}$$
D
$$0.02 \mathrm{~mol} \mathrm{~L}^{-1}$$
4
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following acts as oxidising agent in hydrogen-oxygen fuel cell ?

A
$\mathrm{H}_2$
B
KOH
C
$\mathrm{O}_2$
D
C
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