Give the equation for the formation of rust.

One Line Answer

4Fe + 3O₂ + xH₂O → 2Fe₂O₃. xH₂O (Rust).

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Chapter 8: Periodic Classification of Elements - Evaluation [Page 122]

Chapter 8 Periodic Classification of Elements
Evaluation | Q VI. 3. | Page 122

What is anodising? Give its applications.

What is meant by galvanisation? Why is it done?

If copper is kept exposed to damp air for a considerable time, it gets a green coating on its surface. This is due to the formation of ______.

Brass is an alloy of ______.

Write scientific reasons.

Lemon or tamarind is used for cleaning copper vessels turned greenish.

What is ‘rusting’?

Corrosion of silver causes a black layer of _______.

The diagram shows the reaction between metal and dil. acid.

What is the reason for different behaviour of Mg in test tube B?

Identify the correct statement from the following:

State whether the following statement is true or false:

Ships suffer a lot of damage though they are painted.