Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 44

MEDIUM

JEE Main

IMPORTANT

Earn 100

Two electrolytic cells, one containing acidified ferrous sulphate, and the other containing acidified ferric sulphate are connected in series. The ratio of the iron deposited at the cathodes in the two cells will be_______, respectively.

50% studentsanswered this correctly

Important Questions on Electrochemistry

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 45

An industry produced

40 kg

of calcium in two hours by electrolysis. How much aluminium will be produced by the same current in two hours? (Atomic mass:

Ca =40, Al =27

)

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 46

A solution of a trivalent metal ion is electrolysed by a current of

5 A

for

10 minutes

, during this time,

1.18 g

of metal was plated out. The identity of the metal is _____.

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 47

A depolarizer used in dry cell batteries is

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 48

An example of a simple fuel cell is

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 49

Which of the following reactions occurs at the cathode during charging of storage battery?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 50

E^{°}

values of

{Ag}^{+} | Ag

,

K^{+} | K

,

{Mg}^{2 +} | Mg

and

{Cr}^{3 +} | Cr

are

0.80 V

,

- 2.90 V

,

- 2.37 V

and

- 0.74 V

, respectively. Which of the following represents the correct order of the reducing power of these metals?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 51

When an aqueous solution of lithium chloride is electrolysed using graphite electrodes,

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 10 - Electrochemistry>Level 1>Q 52

In the electrochemical cell,

$Mg (s) |{Mg}^{2 +} (aq) ‖ {Zn}^{2 +} (aq)| Zn (s); E ° = + 3.13 V$

The correct plot of $E_{cell}$ versus $\log \frac{[{Mg}^{2 +}]}{[{Zn}^{2 +}]}$ will be represented as