Question # 1

____________ is an irreversible cell.

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Dry cell

Chargeable cell

Zn cell

None of these

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

Spontaneous chemical reactions take place in:

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electrolytic cell

Galvanic cell

Nelson' s cell

downs cell

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is:

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Cu

AgNO3

Cu(NO3)2

Ag

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

Electrolyte is ____________ solid form.

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in

Sometimes in

Never in

Always in

Which one of the following is not an electrolytic cell:

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Down cell

Galvanic cell

Nelson' cell

Both a and c

It is a good reducing agent

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Fe

H

C

O

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

During the formation of water from hydrogen and oxygen, which of the following does not occur?

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Hydrogen has oxidized

oxygen has reduced

oxygen gains electrons

hydrogen behaves as oxidizing agent

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