Heating of iron material — task. Chemistry CBSE Live product, Class 7.

Answer the following:

An ironsmith heats iron before making tools using iron materials. Why is heating necessary in this process?

i. Why iron is heated before making tools?

To make it brittle to make powder
To make it hard and non-malleable to make desired tools
To make it soft and non-malleable to make desired tools
To make it soft and malleable to make desired tools

ii. Why it is easier to shape hot iron than cold iron?

Heating reduces its hardness and increases its flexibility
Heating reduces its hardness and decreases its flexibility
Heating enhances its hardness and increases its flexibility
Heating increases its hardness and increases its flexibility

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