EASY
12th West Bengal Board
IMPORTANT
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The removal of gangue from the ores is called .

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Important Questions on General Principles and Processes of Isolation of Elements

MEDIUM
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 9
Noble metals like gold and silver purified by _____ process.
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 10
Malachite is a mineral containing_____ .
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 11
The most abundant metal in earth's crust is_____.
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 12

In the metallurgical process for the electrorefining of metal, the anode is made up of _____ metal.

EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 13
In the thermite process_____is used as reducing agent.
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 1
The process of removal of impurities from a crude metal is called 
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 2
The impurities present in the ore when mined are called:
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>REVIEW EXERCISES>Q 3
Calcination and roasting are: