Corrosion and its Prevention

IMPORTANT

Corrosion and its Prevention: Overview

This topic covers concepts such as Prevention of Corrosion, Galvanization, Corrosion of Metals, Mechanism of Rusting of Iron, Factors Affecting Corrosion, Concentration of CO2, SO2, SO3 and Oxides of Nitrogen in Atmosphere, etc.

Important Questions on Corrosion and its Prevention

EASY
IMPORTANT

In electrolytic reduction, reduction of the metal ion takes place on the anode.

MEDIUM
IMPORTANT

How will you define electrolytic reduction?

MEDIUM
IMPORTANT

What is electrolytic reduction method?

EASY
IMPORTANT

The presence of more concentration of nitric oxide in atmosphere is responsible for acid rain and the corrosion of metals. Explain.

EASY
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Write a short note on the gaseous pollutants responsible for corrosion of the metal in an industrial environments.

HARD
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State the factors affecting corrosion.

EASY
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What is an impurity in metal?

EASY
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At what pH does water become corrosive?

MEDIUM
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What is cathodic protection of iron?

MEDIUM
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How is cathodic protection of iron different from its galvanisation?

MEDIUM
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How does cathodic protection of iron operate?

MEDIUM
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Which type of metal can be used in cathodic protection of Iron against rusting?

MEDIUM
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Which protective coating can be used for corrosion prevention?

EASY
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Write a brief note on barrier protection method for prevention of corrosion.

EASY
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What is the most effective corrosion barrier protective coating?

EASY
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The process of zinc-plating on iron sheet is known as _____.(galvanisation/roasting)

EASY
IMPORTANT

The process of zinc-plating on iron sheet is known as

EASY
IMPORTANT

What is the chemical composition of rust?

MEDIUM
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During the process of corrosion of iron in atmosphere, a metal is reduced.

MEDIUM
IMPORTANT

During the process of corrosion of iron in atmosphere, the product formed at cathode is: