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

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

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H2S

Br2

S

2HBr

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

Films are coated by special chemical known as ____________ detectors.

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Photographic

Image

Nil

Both

NaOH is prepared by ____________ of NaCL (aqueous).

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Electrolysis

Decomposition

A & B

Nil

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

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zn

H⁺

C

H²

In silver plating Anode is made of:

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Gold

Ag

Neon

Nil

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

Brine is an aqueous solution of

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NaCI

NaOH

AgNO3

CaO

The oxidation number of chromium in K₂Cr₂O₇ is:

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+2

+6

+7

+14

____________ is an irreversible cell.

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Dry cell

Chargeable cell

Zn cell

None of these

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