Question # 1

In Daniel cell, if salt bridge is removed between the two half cells, the voltage.

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Drops to zero

Does not changes

Increases gradually

Increases rapidly

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

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-4

-2

+2

+4

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

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Decomposed

Reduced

Oxidized

Catalyzed

In NICAD dry cell, the cathode and anode is made up of.

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Ca and Ag

Ni and CdO2

NiO2 and Cd

Ag and Ag2O

Oxidation number of Cr in a C₂CrO₄ is

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+2

+4

+6

+8

The oxidation number of C in C12H22O11 is

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Zero

- 6

+ 6

12

The electrode reaction of a voltaic cell can be reversed when

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Concentrations of solutions are changed

Temperature is increased

Electrodes are interchanged

Electric circuit is employed to supply the source of electricity

Oxidation number of carbon in NaHCO₃

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+4

-6

+6

+2

The best reducing agent is

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F^-1

CI^-1

Br^-1

I^-1

In lead accumulator cathode is made up of.

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Pb

Pb coated with PbO2

PbSO4

Mixture of Pb and PbO2

Which is not chargeable cell

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Lead accumulator

NiCAD cell

Fuel cell

Alkaline battery

When aqueous NaCl is electrolyzed, which of the following ions gas discharged at anode.

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Cl-

OH-

Na+

H+

Which of the following statements is correct about galvanic cell

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Anode is negative charged

Reduction occurs at anode

Cathode is positively charged

Reduction occurs at cathode

Stronger the oxidizing agent greater is the

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Oxidation potential

Reduction potential

Redox potential

E.M.F of 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

If strip of Cu metal is placed in the solution of FeSO4

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Cu will be precipitated out

Fe is precipitated out

Cu and Fe both dissolves

No reaction takes place

Which is not use of electrochemical series.

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Feasibility of reaction

Measurement of EMF of cell

Comparison of reactivity with water or acids

Determination of atomic and ionic radii

The gain of electron is known as.

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Oxidation

Reduction

Dehydration

Dehydrogenation

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Chemistry Fsc Part 1 Chapter 10 Online Test MCQs With Answers

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