Question # 1

A single lead cell provides volts

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2

4

6

8

Fuel cells are mostly used in space air crafts as the source of.

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Power only

Drinking water

Drinking water and power

Fuel and drinking water

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

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

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Cu will be precipitated out

Fe is precipitated out

Cu and Fe both dissolve

No reaction takes place

What is oxidation state of chlorine in Ca(ClO3)2

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+1

+3

+5

+7

Cell potential depends upon

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Temperature

Concentration of ions

Nature of electrolyte

All of above

Oxidation number of Cr in a C₂CrO₄ is

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+2

+4

+6

+8

In H2SO4the oxidation number of 'S' is

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+2

+6

+8

+4

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

Electrolysis is used for

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Electroplating

Refining of copper

Manufacture of caustic soda

All of the above

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Fe is reduced

Fe is oxidized

CI₂is oxidized

None of these

Stronger the oxidizing agent, greater is the

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oxidation potential

Reduction potential

Redox potential

E.M.F of cell

The cell in which a non spontaneous redox reaction takes place as a result of electricity is known as.

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Voltaic cell

Denial cell

dry Cell

Electrolytic cell

Alkali and alkaline earth metal are usually obtained by

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Decomposition of their carbonates

By heating their hydroxide

electrolysis of molten metal oxides

Electrolysis of molten metal halides

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