Electrochemistry Test

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Electrochemistry Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

Corrosion can be an advantage in which of the following cases?

A
A layer of oxide is formed on surface, which protects the inner metal from corrosion

B
During the rusting of iron

C
The Hulls of the boat in the sea getting rusted due to salt water

D
None of the above
Question 2
1 / -0

The number of Faradays required to deposit $$1\ g$$ equivalent of aluminium $$(At.wt\ 27)$$ from a solution of $$AlCl_{3}$$ is:

A
$$1$$

B
$$2$$

C
$$3$$

D
$$4$$

Solution
Question 3
1 / -0

The amount of metal deposited at cathode on passing an electric current of 0.75 amperes in aqueous ferric sulphate solution for 30 minutes will be:(atomic wt. of Fe =56 )

A
0.00435 g

B
0.261 g

C
0.783 g

D
0.522 g

Solution
Question 4
1 / -0

$$pH$$ of the solution in the anode compartment of the following cell at $$25^{o}C$$ is $$x$$ when $$E_{cell}-E_{cell}^{o}=0.0591\ V. Pt(H_{2})|pH=x||Ni^{2+}(1\ M)|Ni, x$$ is $$1\ atm$$

A
$$4$$

B
$$3$$

C
$$2$$

D
$$1$$

Solution
Question 5
1 / -0

The charge of an electron is $$ - 1.6 \times {10^{ - 19}}C.$$ The value of free charge on $$L{i^ + }$$ ion will be

A
$$3.6 \times {10^{ - 19}}C$$

B
$$1 \times {10^{ - 19}}C$$

C
$$1.6 \times {10^{ - 19}}C$$

D
$$2.6 \times {10^{ - 19}}C$$

Solution
Question 6
1 / -0

When equilibrium is attained.

A
$$\Delta G^{0}=0$$

B
$$E^{0}=0$$

C
$$K=0$$

D
$$none\ of\ these$$

Solution

Question 7

1 / -0

Observations the displacement reaction of metals given in the table below

Metal

Aluminium

Zinc

Iron

Copper

Al Zn Fe Cu

--	Zinc is displaced	Iron is displaced	Copper is displaced
No Reaction	--	Iron is displaced	Copper is displaced
No Reaction	No Reaction	--	Copper is displaced
No Reaction	No Reaction	No Reaction	--

Which of the following metal given in the table above is most reactive?

Aluminium

Zinc

Iron

Copper

Solution

Question 8
1 / -0

The process in which any electrolyte gets decomposed when electricity is passed through it, is called

A
electrolysis

B
decomposition

C
dissociation

D
splitting

Solution
Question 9
1 / -0

The process of separating ions is called________.

A
Electroplating

B
Electrolysis

C
Electric refilling

D
All of these

Solution
Question 10
1 / -0

Faraday's laws of electrolysis will fail when

A
temperature is increased

B
inert electrodes are used

C
a mixture of electrolytes is used

D
in none of the above cases

Solution

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Re-Attempt Weekly Quiz Competition

Electrochemistry Test - 69

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Electrochemistry Test - 69

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SHARING IS CARING

Question 1

A layer of oxide is formed on surface, which protects the inner metal from corrosion

During the rusting of iron

The Hulls of the boat in the sea getting rusted due to salt water

None of the above

Question 2

$$1$$

$$2$$

$$3$$

$$4$$

Solution

Question 3

0.00435 g

0.261 g

0.783 g

0.522 g

Solution

Question 4

$$4$$

$$3$$

$$2$$

$$1$$

Solution

Question 5

$$3.6 \times {10^{ - 19}}C$$

$$1 \times {10^{ - 19}}C$$

$$1.6 \times {10^{ - 19}}C$$

$$2.6 \times {10^{ - 19}}C$$

Solution

Question 6

$$\Delta G^{0}=0$$

$$E^{0}=0$$

$$K=0$$

$$none\ of\ these$$

Solution

Question 7

Aluminium

Zinc

Iron

Copper

Solution

Question 8

electrolysis

decomposition

dissociation

splitting

Solution

Question 9

Electroplating

Electrolysis

Electric refilling

All of these

Solution

Question 10

temperature is increased

inert electrodes are used

a mixture of electrolytes is used

in none of the above cases

Solution

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