1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

How many electrons flow through the wire if a current of 1.5 ampere flow through it for 3 hours?

A
$$1.60 \times 10^{19}$$
B
$$1.01 \times 10^{23}$$
C
$$1.01 \times 10^{19}$$
D
$$1.60 \times 10^{23}$$
2
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The conductivity of $$0.3 \mathrm{M}$$ solution of $$\mathrm{KCl}$$ at $$298 \mathrm{~K}$$ is $$0.0627 \mathrm{~S} \mathrm{~cm}^{-1}$$. What is it's molar conductivity?

A
$$104 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$188 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$209 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$109 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
3
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the cell represented as $$\mathrm{Ni}_{(\mathrm{s})}\left|\mathrm{Ni}_{(\mathrm{IM})}^{2 \oplus}\right|\left|\mathrm{Ag}_{(\mathrm{IM})}^{\oplus}\right| \mathrm{Ag}_{(\mathrm{s})}$$, the reducing agent is

A
Ag
B
$$\mathrm{Ag}^{\oplus}$$
C
$$\mathrm{Ni}$$
D
$$\mathrm{Ni}^{2 \oplus}$$
4
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

How many Faraday of electricity is required to deposit $$0.8 \mathrm{~g}$$ of calcium at cathode by the electrolysis of $$\mathrm{CaCl}_2$$ ?

(Molar mass of $$\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}$$)

A
4 F
B
0.04 F
C
2.5 F
D
2 F
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