Question # 1

____________ are good conductors of electricity.

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Covalent compound

Metals

Both

None of these

____________ is an irreversible cell.

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Dry cell

Chargeable cell

Zn cell

None of these

____________ cell is made of two half of cells.

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Zinc cell

Galvanic

Both

All

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

It is a strong electrolyte

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H2O

CH3COOH

NaOH

C6H6

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

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 silver plating Anode is made of:

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Gold

Ag

Neon

Nil

It is a good reducing agent

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Fe

H

C

O

The cathode of Daniel cell is made up of

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Zn

Cu

AI

C

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