EASY
12th West Bengal Board
IMPORTANT
Earn 100
Name the most important ore of aluminium.
Important Questions on General Principles and Processes of Isolation of Elements
MEDIUM
12th West Bengal Board
IMPORTANT
When bauxite ore contains a considerable quantity of silica as an impurity, which process is used for the purification of bauxite ore?
EASY
12th West Bengal Board
IMPORTANT
Name two alloys of aluminium and give their composition?
HARD
12th West Bengal Board
IMPORTANT
What is the composition of ignition mixture used in aluminothermy?
MEDIUM
12th West Bengal Board
IMPORTANT
Which process is used to convert alumina into pure aluminium?
EASY
12th West Bengal Board
IMPORTANT
What is the role of cryolite in the extraction of pure aluminium from bauxite ore by electrolytic process?
EASY
12th West Bengal Board
IMPORTANT
What is the purpose of adding small amount of fluorspar to alumina during the extraction of aluminium?
EASY
12th West Bengal Board
IMPORTANT
Why aluminium acts as a good reducing agent?
HARD
12th West Bengal Board
IMPORTANT
What is anodised aluminium?
