Chemistry Test

Question 1
5 / -1

e₁ is the electrochemical equivalent of an element of chemical equivalence E₁. The electrochemical equivalent of an element of chemical equivalence E₂ is

A
E2E1/e1

B
E1/e1E2

C
e1E1/E2

D
e₁E₂/E₁

Question 2
5 / -1

What is the cell constant if the conductivity of 0.001 M NaCl solution at 298 K is 0.146 x 10^-3 S cm-1? If the resistance of a conductivity cell containing 0.001 M NaCl solution at 298 K is 1000 Ω.

A
0.219 cm^-1

B
0.146 cm-1

C
0.292 cm-1

D
None

Question 3
5 / -1

What are the gaseous products liberated at anode and cathode respectively when dilute aqueous solution of Sulphuric acid is electrolysed?

A
SO₂, H₂

B
H2, SO2

C
H2, O2

D
O₂,H₂

Question 4
5 / -1

Which of the following changes will be observed, when a copper wire is dipped in an aqueous solution of silver nitrate for some time?

A
The colour of the solution changes from blue to colourless and a silver solid deposits on copper wire.

B
The colour of the solution changes from blue to colourless and a brown solid deposits on copper wire.

C
The colour of the solution changes from colourless to blue and a silver solid deposits on copper wire.

D
The colour of the solution does not change and a silver solid deposits on copper wire.

Question 5
5 / -1

The standard Gibbs energy for the given cell reaction in kJ mol^-1 at 298 K is:
Zn(s) + Cu ²⁺ (aq) →Zn²⁺ (aq) + Cu(s)
E° = 2V at 298 K
(Faraday’s constant, F = 96000 C mol-1)

A
-384

B
384

C
192

D
-192

Question 6
5 / -1

The decreasing order of electrical conductivity of the following aqueous solution is:
0.1 M Formic acid (A),
0.1 M Acetic acid (B)
0.1 M Benzoic acid (C)

A
A > C > B

B
C > B > A

C
A > B > C

D
C > A > B

Question 7
5 / -1

Following table represents the type of reactions of three metals with various solutions.
Metal
lron (II) Sulphate
Copper (II) Sulphate
Zinc Sulphate
A
No reaction
Displacement
Not known
B
No reaction
No reaction
No reaction
C
Displacement
Not known
No reaction
Which of the following represents the correct order of reactivity of metals A, B, C

A
C > A > B

B
B > C > A

C
B > A > C

D
A > C > B

Question 8
5 / -1

Which of the following statement is true regarding Molar conductivity?

A
Molar conductivity decrease with decrease in concentration

B
Molar conductivity increases with a increase in concentration

C
Molar conductivity increases with a decrease in concentration

D
No relation between Molar conductivity and concentration

Question 9
5 / -1

A pH electrode obeys Nernst equation and is being operated at 25°C. The change in the open circuit voltage in millivolts across the electrode for a pH change from 6 to 8 is ___________.

A
110

B
118

C
138

D
180

Question 10
5 / -1

Which of the following statement is true regarding fuel cell?
i. Cathode Reaction of fuel cell O₂ + 2H₂O + 4e^– → 4OH^–
ii. Anode Reaction of fuel cell 2H₂ + 4OH^–→ 4H₂O + 4e^–
iii. Water is used as an oxidizing agent.

A
Statement (i) and (ii) are true.

B
Statement (ii) and (iii) are true.

C
Statement (i) and (iii) are true.

D
All are true.

Submit Test

Metal	lron (II) Sulphate	Copper (II) Sulphate	Zinc Sulphate
A	No reaction	Displacement	Not known
B	No reaction	No reaction	No reaction
C	Displacement	Not known	No reaction

Chemistry Test ...

Question 1

E2E1/e1

E1/e1E2

e1E1/E2

e1E2/E1

Question 2

0.219 cm-1

0.146 cm-1

0.292 cm-1

None

Question 3

SO2, H2

H2, SO2

H2, O2

O2, H2

Question 4

The colour of the solution changes from blue to colourless and a silver solid deposits on copper wire.

The colour of the solution changes from blue to colourless and a brown solid deposits on copper wire.

The colour of the solution changes from colourless to blue and a silver solid deposits on copper wire.

The colour of the solution does not change and a silver solid deposits on copper wire.

Question 5

-384

384

192

-192

Question 6

A > C > B

C > B > A

A > B > C

C > A > B

Question 7

C > A > B

B > C > A

B > A > C

A > C > B

Question 8

Molar conductivity decrease with decrease in concentration

Molar conductivity increases with a increase in concentration

Molar conductivity increases with a decrease in concentration

No relation between Molar conductivity and concentration

Question 9

110

118

138

180

Question 10

Statement (i) and (ii) are true.

Statement (ii) and (iii) are true.

Statement (i) and (iii) are true.

All are true.

User

Question Analysis

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e₁E₂/E₁

0.219 cm^-1

SO₂, H₂

O₂,H₂