Question # 1

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

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Cu

AgNO3

Cu(NO3)2

Ag

Films are coated by special chemical known as ____________ detectors.

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Photographic

Image

Nil

Both

____________ cell is made of two half of cells.

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Zinc cell

Galvanic

Both

All

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

Which is used for industrial manufacture of NaCI?

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Daniel cell

Down's cell

Nelson's cell

None of these

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

In the redox reaction between zn and HCI. the oxidizing agent is:

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zn

H⁺

C

H²

Which one of the following is not an electrolyte?

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sugar solution

sulphuric acid solution

Lime solution

Sodium chloride solution

It is a strong electrolyte

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H2O

CH3COOH

NaOH

C6H6

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

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