Corrosion and its Prevention

Volatile oxidation corrosion product of a metal is,

Lower the pH, corrosion is :

Galvanization is applying a coating of:

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

What is the chemical composition of rust?

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

The scratch test on any material gives us knowledge about

Which of the following metal is not used as a sacrificial anode?

Which metal is often used as sacrificial metal?

${\mathrm{K}}_{\mathrm{w}}$ is the ionisation constant for water and its value is

What is the pH value of pure water?

Which of these following factors affect corrosion?

Which material has the highest scratch hardness?

Which of these following factors affect corrosion?

 The phase change from water vapor to liquid water is known as:
 

The metal used for galvanization of iron is

Rust is a mixture of

Assertion: Galvanised iron does not rust.

Reason: Zinc has a more negative electrode potential than iron.

Which is not correct method for prevention of iron from rusting?

Which of the following mixture causes corrosion-