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Unit I: Metallurgy
- Online Test
Unit I: Metallurgy
TEST : 3
TN State Board
TN 12th Standard
Chemistry
Unit I: Metallurgy
Prepare / Learn
Q1.
In the electrolytic refining of copper, which one of the following is used as anode?
A.
Pure copper
B.
Impure copper
C.
Carbon rod
D.
Platinum electrode
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Chemistry
Unit I: Metallurgy
Prepare / Learn
Q2.
Which of the following plot gives Ellingham diagram
A.
ΔSVsT
B.
ΔG
0
Vs T
C.
ΔG
0
Vs 1/T
D.
ΔG
0
Vs T
2
View Solution
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Chemistry
Unit I: Metallurgy
Prepare / Learn
Q3.
In the Ellingham diagram, for the formation of carbon monoxide
A.
B.
C.
D.
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Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Chemistry
Unit I: Metallurgy
Prepare / Learn
Q4.
Which of the following reduction is not thermodynamically feasible?
A.
Cr
2
O
3
+ 2Al → Al
2
O
3
+ 2Cr
B.
Al
2
O
3
+ 2Cr → Cr
2
O
3
+ 2Al
C.
3TiO
2
+ 4Al → 2 Al
2
O
3
+ 3Ti
D.
none of these
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Chemistry
Unit I: Metallurgy
Prepare / Learn
Q5.
Which of the following is not true with respect to Ellingham diagram?
A.
Free energy changes follow a straight line. Deviation occurs when there is a phase change.
B.
The graph for the formation of CO
2
is a straight line almost parallel to free energy axis.
C.
Negative slope of CO shows that it becomes more stable with increase in temperature.
D.
Positive slope of metal oxides shows that their stabilities decrease with increase in temperature.
View Solution
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Answer :
Option B
Explaination / Solution:
No Explaination.
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Unit I: Metallurgy
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Unit I: Metallurgy
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TN State Board : TN 12th Standard (Chemistry)
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Unit I: Metallurgy
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Unit II: p-Block Elements I
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