Question # 1

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

In silver plating Anode is made of:

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Gold

Ag

Neon

Nil

Oxidation means

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Gain of oxygen

Removal of oxygen

Gain of hydrogen

Gain of electrons

Films are coated by special chemical known as ____________ detectors.

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Photographic

Image

Nil

Both

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

____________ do not conduct electricity.

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Electrolyte

Non-electrolyte

Both

Nil

Reduction means

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Removal of H2

Removal of electrons

Gain of electrons

Gain of O2

Which is used for industrial manufacture of NaCI?

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Daniel cell

Down's cell

Nelson's cell

None of these

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

Which one is strong electrolyte ?

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NH4OH

NaOH

a & b

Nil

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

Which one of the following is not an electrolyte?

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sugar solution

sulphuric acid solution

Lime solution

Sodium chloride solution

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

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9th Class Chemistry Chapter 9 Table of Elements and Their Symbols English Medium KPK Boards Online Mcqs MCQs With Answers

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