Question # 1

The branch of chemistry which deals with inter conversion of electrical & chemical energy is:

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Biochemistry

Electrochemistry

Organic chemistry

None of these

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

____________ are good conductors of electricity.

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Covalent compound

Metals

Both

None of these

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

Br2 + H2S __ 2HBr + S, which one is oxidizing agent:

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H2S

Br2

S

2HBr

Which is used for industrial manufacture of NaCI?

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Daniel cell

Down's cell

Nelson's cell

None of these

Brine is an aqueous solution of

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NaCI

NaOH

AgNO3

CaO

The metallic plates through which electrons enters and leaves electrolytes:

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Wires

Electrodes

Both

Nil

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

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zn

H⁺

C

H²

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

Metals are covered by using.

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Baeyer's test

Bohr's

Electrolysis

None

It is a good reducing agent

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Fe

H

C

O

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