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class 12
Solutions for all the questions from class 12
CLASS
class 10
class 11
class 12
class 6
class 7
class 8
class 9
SUBJECT
biology
chemistry
maths
physics
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
In the electrolysis of alumina using cryolite, the reaction that takes place at cathode is:
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Which of the following metal oxide(s) gives metal and oxygen on heating ?
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The order the reactivity of some metals are given. Answer the following questions by analyzing it.
Al > Zn > Cu > Au
Metal ore which is reduced by carbon is
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The extraction of metals from oxide ores involve(s) :
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Lead is extracted from its chief ore galena by both carbon reduction as well as self-reduction.
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Explain with reasons:
Carbon can reduce lead oxide but not aluminium oxide.
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The extraction of metals from oxide ores may involve:
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The oxide of a metal (R) can be reduced by the metal (P) and metal (R) can reduce the oxide of metal (Q). Then the decreasing order of the reactivity of metal (P), (Q) and (R) with oxygen is :
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Metal ions like
A
g
+
,
C
u
2
+
etc. act as
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The main source of lead is
P
b
S
. It is converted to
P
b
by the reactions are shown above. Out of these, the self-reduction process is:
1
2
3
4
5
6
7
8
9
10
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class 12
Solutions for all the questions from class 12
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CLASS
class 10
class 11
class 12
class 6
class 7
class 8
class 9
SUBJECT
biology
chemistry
maths
physics
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
In the electrolysis of alumina using cryolite, the reaction that takes place at cathode is:
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Which of the following metal oxide(s) gives metal and oxygen on heating ?
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The order the reactivity of some metals are given. Answer the following questions by analyzing it.
Al > Zn > Cu > Au
Metal ore which is reduced by carbon is
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The extraction of metals from oxide ores involve(s) :
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Lead is extracted from its chief ore galena by both carbon reduction as well as self-reduction.
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Explain with reasons:
Carbon can reduce lead oxide but not aluminium oxide.
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The extraction of metals from oxide ores may involve:
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The oxide of a metal (R) can be reduced by the metal (P) and metal (R) can reduce the oxide of metal (Q). Then the decreasing order of the reactivity of metal (P), (Q) and (R) with oxygen is :
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
Metal ions like
A
g
+
,
C
u
2
+
etc. act as
Class 12
Chemistry
Metallurgy
General Principles and Processes of Isolation of Elements
The main source of lead is
P
b
S
. It is converted to
P
b
by the reactions are shown above. Out of these, the self-reduction process is:
1
2
3
4
5
6
7
8
9
10
Previous
page
1 / 662
You're on page
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page
2
page
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page
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page
5
page
...
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662
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page
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