Question # 1

Spontaneous chemical reactions take place in:

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electrolytic cell

Galvanic cell

Nelson' s cell

downs cell

Metals are covered by using.

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Baeyer's test

Bohr's

Electrolysis

None

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

In metal hydrides, the oxidation number of hydrogen is

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+1

-1

+2

-2

Films are coated by special chemical known as ____________ detectors.

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Photographic

Image

Nil

Both

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

NaOH is prepared by ____________ of NaCL (aqueous).

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Electrolysis

Decomposition

A & B

Nil

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

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

CO2 the oxidation number of C =.

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+1

+2

+3

+4

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