Question # 1

What is the oxidation state of sulphur in SO3^2-

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-4

-2

+2

+4

The oxidation of O -atom in OF3 is.

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-2

+2

-1

+1

During the electrolysis of molten NaCI, the ion which is reduce is

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Which has greater reduction potential

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Na

H2

Zn

F2

In which of the following changes, nitrogen in reduced.

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NH3 to NO

NH3 to NO3

N2 to NH3

N-3 to N2

Cell potential depends upon

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Temperature

Concentration of ions

Nature of electrolyte

All of above

The difference of potential of two electrodes when concentration of solution is 1 M each at 25^oC and 1 atmosphere is called.

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Electrode potential

Standard cell potential

Cell reaction

Cell voltage

A cell in which electric current is produced as a result of spontaneous redox reaction is called.

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Electrolytic cell

Galvanic cell

Half cell reaction

Down's cell

Electrochemical series is the arrangement of the electrodes in

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Increasing order of reduction potentials

Decreasing order of reduction potentials

Increasing order of oxidation reduction potential

There is no fixed arrangement

Stronger the oxidizing agent, greater is the

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oxidation potential

Reduction potential

Redox potential

E.M.F of cell

Electrode of the lead storage battery are immersed in dilute H2SO4 which has strength by mass

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100%

98%

30%

10%

In silver oxide battery, anode is made of.

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Zinc

Copper

Lead

Graphite

Which statements not correct about Galvanic cell.

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Anode in negatively charge

Reduction occur at anode

Cathode is positively charged

Reduction occur at cathode

When a non-spontaneous redox reaction is carried out by using the electrical current, then the process is called

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Decomposition of the substances

Cracking

Hydrolysis

Electroiysis

That cell in which electrical energy is converted into chemical energy is called

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Galvanic cell

Electrolytic cell

Fuel cell

Daniel cell

Stronger the oxidizing agent greater is the

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Oxidation potential

Reduction potential

Redox potential

E.M.F of cell

When an atom reacts chemically and loses one or more electrons it is.

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Decomposed

Reduced

Oxidized

Catalyzed

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