Question # 1

Which one is not a property of electrolytic cell?

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It consists of one complete cell

Anode has +ve charge

It converts electrical energy into chemical one

Anode has -ve charge

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

Which one of the following is a galvanic cell?

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Daniel cell

Nelson's cell

Down's cell

Both B and C

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

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zn

H⁺

C

H²

NaOH is prepared by ____________ of NaCL (aqueous).

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Electrolysis

Decomposition

A & B

Nil

____________ are good conductors of electricity.

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Covalent compound

Metals

Both

None of these

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

By electrolytic refining of copper , it is ____________ % pure.

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98

99

99.99

100

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

The formula of rust is:

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Fe₂O₃,nH₂o

Fe₂O₃

Fe(OH)₃-nH₂O

Fe(OH)₃

Reduction means

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Removal of H2

Removal of electrons

Gain of electrons

Gain of O2

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