Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyBy annealing,steel
- ABecomes soft
- BBecomes liquid
- CBecomes hard and brittle
- DIs covered with a thin film of $Fe_3O_4$
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Similar Questions
In the wrought iron of the iron pillar located in Delhi,what other elements are present besides iron?
Medium
View SolutionThe $INCORRECT$ statement is:
Blister copper is ..........
Medium
View SolutionConsider the following:
Statement-$I$ : In the extraction of $Al$ by Hall-Heroult process,pure $Al_2O_3$ mixed with $Na_3AlF_6$ lowers its melting point and increases conductivity.
Statement-$II$ : Zirconium metal is purified by zone refining method.
Statement-$I$ : In the extraction of $Al$ by Hall-Heroult process,pure $Al_2O_3$ mixed with $Na_3AlF_6$ lowers its melting point and increases conductivity.
Statement-$II$ : Zirconium metal is purified by zone refining method.
German silver does not contain
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