Electrochemistry Mcqs

Our collections of Multiple choice questions and answers focuses on study of Electrochemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Electrochemistry topics comprehensively.

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2.
If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs?

H2 is deposited at cathode

Colour of the solution becomes fade

Cu is deposited at anode

All are possible

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3.
Stronger the oxidizing agent greater is the

Oxidation potential

Reduction potential

Redox potential

Emf of cell

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5.
Which of the following cell is not rechargeable?

Lead storage battery

Silver oxide cell

Fuel cell

Ni-Cd cell

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6.
In an electrolytic cell current flows ?

From cathode to anode in outer circuit

From anode to cathode outside the cell

From cathode to anode inside the cell

Both b & c

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7.
Which of the following is true in the case of Zn-Cu cell?

The flow of electrons takes place from copper to zinc

E0red of copper electrode is less than that of zinc electrode

Zinc acts as an anode and copper as cathode

All are correct

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8.
In a galvanic cell

Chemical energy is converted into electricity

Chemical energy is converted into heat

Electrical energy is converted into chemical energy

Electrical energy is converted into heat

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9.
The degree of dissociation of week electrolyte increases as

Pressure increases

Dilution decreases

Dilution increases

None

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10.
Molten NaCl conducts electricity due to the presence of

Free electrons

Free molecules

Free ions

Atoms of Na and Cl

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11.
In which of the following reactions occur at cathode?

Cu2++2e-? Cu

Cu+2e-? Cu2+

Hg + O2 ? HgO

Mg + O2 ? MgO

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14.
In electrolytic cell electricity carries

Spontaneous reaction

Non-wpontaneous reaction

Neutralization

All of above

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