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List of top Chemistry Questions on General Principles and Processes of Isolation of Elements asked in JEE Main
With respect to an ore, Ellingham diagram helps to predict the feasibility of its -
JEE Main - 2019
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with :
JEE Main - 2018
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
In the leaching method, bauxite ore is digested with a concentrated solution of NaOH that produces ?X?. When
$CO_2$
gas is passed through the aqueous solution of ?X?, a hydrated compound ?Y? is precipitated. ?X? and ?Y? respectively are :
JEE Main - 2018
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
Extraction of copper by smelting uses silica as an additive to remove :
JEE Main - 2016
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
Which one of the following ores is best concentrated by froth-flotation method?
JEE Main - 2016
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
Calamine is an ore of :
JEE Main - 2015
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
In the context of the Hall-Heroult process for the extraction of
$Al$
, which of the following statements is false?
JEE Main - 2015
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
Calcination is the process in which:
JEE Main - 2013
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
In Goldschmidt aluminothermic process which of the following reducing agents is used:
JEE Main - 2013
JEE Main
Chemistry
General Principles and Processes of Isolation of Elements
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