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Chemistry

General Principles And Processes Of Isolation Of Elements

15 previous year questions.

Volume: 15 Ques
Yield: Medium

High-Yield Trend

1
2022
1
2021
2
2015
2
2012
3
2011
2
2010
1
2009
2
2006
1
2005

Chapter Questions
15 MCQs

01
PYQ 2005
medium
chemistry ID: comedk-u
Liquation process is used for the purification of
1
copper
2
iron
3
aluminium
4
lead.
02
PYQ 2006
medium
chemistry ID: comedk-u
Lead metal is purified by
1
poling
2
liquation
3
electromagnetic separation
4
smelting.
03
PYQ 2006
medium
chemistry ID: comedk-u
In the removal of silica during smelting, the flux used is
1
ferric oxide
2
calcium oxide
3
cupric oxide
4
phosphorus pentoxide
04
PYQ 2009
easy
chemistry ID: comedk-u
Horn silver is
1
oxide ore
2
sulphide ore
3
halide ore
4
carbonate ore
05
PYQ 2010
medium
chemistry ID: comedk-u
Which of the following ores will be concentrated by froth floatation method?
1
Horn silver
2
Bauxite
3
Cinnabar
4
Pyrolusite
06
PYQ 2010
medium
chemistry ID: comedk-u
Which of the following is not a mineral of iron?
1
Limonite
2
Magnetite
3
Camallite
4
Haematite
07
PYQ 2011
medium
chemistry ID: comedk-u
Iron is extracted by
1
pyrornetallurgy
2
hydrometallurgy
3
electrometallurgy
4
reduction.
08
PYQ 2011
medium
chemistry ID: comedk-u
Bauxite is
1
an oxide ore
2
halide ore
3
carbonate ore
4
sulphide ore.
09
PYQ 2011
medium
chemistry ID: comedk-u
Siderite is
1
carbonate ore
2
halide ore
3
oxide ore
4
sulphide ore.
10
PYQ 2012
medium
chemistry ID: comedk-u
For the dissociation of limestone in the slag zone of the blast furnace, the reaction is
1
exothermic accompanied by increase in entropy
2
endothermic accompanied by decrease flux used is in entropy
3
endothermic accompanied by increase in entropy.
4
exothermic with no change in entropy
11
PYQ 2012
medium
chemistry ID: comedk-u
Which one of the following ores is obtained by floatation process?
1
Magnesite
2
Magnetite
3
Galena
4
Malachite
12
PYQ 2015
medium
chemistry ID: comedk-u
In the metallurgy of aluminium when the fused matrix is electrolyzed, the overall reduction reaction is
1
2
3
4
13
PYQ 2015
medium
chemistry ID: comedk-u
Carbon monoxide forms volatile compound with
1
2
3
4
14
PYQ 2021
easy
chemistry ID: comedk-u
The reducing agent which is used to reduce iron oxide in blast furnace is:
15
PYQ 2022
easy
chemistry ID: comedk-u
Which of the following is used to prepare the inner lining of a blast furnace?

About General Principles And Processes Of Isolation Of Elements - COMEDK-UGET

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