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- 1. Multiple Choice
How to prepare aluminium in industry
Bayer Process
Heating
Hall-Heroult Process
- 2. Multiple Choice
The colour absorber for fabric is called mordant
true
false
- 3. Multiple Choice
These are the properties of Boron except
semiconductor
low melting point
reduce water vapour to hydrogen
form crystal
- 4. Multiple Choice
Boric acid is use as a strong antiseptic
True
False
- 5. Multiple Choice
What is the more stable polmorphs that form in Boron Nitride?
Diamond type
Graphite type
- 6. Multiple Choice
Symbol for Indium?
Id
In
I
Im
- 7. Multiple Choice
Group 13 on the periodic table is the
Boron Group
Noble Gases
Transition Metals
- 8. Multiple Choice
How is alumina created?
Heating and cooling of bauxite with other mineral and gases
Fermentation of Bauxite with chemicals
Reaction of Bauxite with other elements
Bauxite decaying
- 9. Multiple Choice
Aluminium oxide is
soluble in water
a covalent compound with ionic character.
amphoteric in nature.
reactive towards most acid.
- 10. Multiple Choice
Aluminium oxide is able react with both acids and bases, whereas pottasium oxide an only react with an acid. This means that
potassium oxide is ionic
aluminium is more reactive
aluminium oxide is amphoteric
potassium oxide is a strong base
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