EASY
12th West Bengal Board
IMPORTANT
Earn 100
How is bauxite ore purified by Baeyer's process?
Important Questions on General Principles and Processes of Isolation of Elements
MEDIUM
12th West Bengal Board
IMPORTANT
How is pure alumina prepared from bauxite in Baeyer's process? Give the equation of each step.
EASY
12th West Bengal Board
IMPORTANT
Write down the formulae of the following ores:
chalcopyrites, Bauxite, Fluorspar, Haematite.
EASY
12th West Bengal Board
IMPORTANT
What are the chemical constituents of copper matte? Write down the main self-reduction reaction by which copper is extracted.
EASY
12th West Bengal Board
IMPORTANT
Differentiate between ore and mineral.
EASY
12th West Bengal Board
IMPORTANT
Differentiate between (b) Gangue and Slag.
MEDIUM
12th West Bengal Board
IMPORTANT
What is the roles of cryolite and fluorspar in the electrolytic extraction of aluminium from pure alumina?
EASY
12th West Bengal Board
IMPORTANT
What is slag? Give one example.
MEDIUM
12th West Bengal Board
IMPORTANT
What are the main constituents of German Silver?
