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प्रश्न
Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis ?
उत्तर
Aluminium vessels should not be cleaned with powders containing alkalis because aluminium reacts with alkalis to produce meta aluminate.
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संबंधित प्रश्न
State the main components of the following alloys:
Duralumin
Why does iron or zinc not occur free in nature?
How is concentrated ore changed to oxide?
Explain the following:
Zinc is used to cover iron so as to prevent rusting of iron. Why?
State the use of:
wrought Iron
Name the following :
Ore of iron referred to as "fool's gold".
Name a metal which occurs free in nature.
Give the name and formula of an ore of zinc.:
Roasting of the ore
The following question refer to the extraction of aluminium and iron from their ores:
What is the major impurity present in iron when it is removed from the furnace?
This is not an alloy of copper:
