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General Principles and Processes of Isolation of Elements
- Online Test
General Principles and Processes of Isolation of Elements
TEST : 1
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q1.
Metals which occur in native state in nature
A.
Do not form compounds
B.
Are not very reactive
C.
Are very reactive
D.
Have low density
View Solution
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Answer :
Option B
Explaination / Solution:
Least reactive metals are found in native state.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q2.
Metal which is found in free state is
A.
Iron
B.
Gold
C.
Zinc
D.
Copper
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Answer :
Option B
Explaination / Solution:
Gold is least reactive metal.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q3.
Which among the following statement is correct?
A.
all minerals are ore
B.
metals are extracted from mineral
C.
all ores are minerals
D.
a mineral cannot be an ore
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Answer :
Option C
Explaination / Solution:
All ores are minerals but vice versa is not true. Because ores are the minerals from which metal can be profitably extracted.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q4.
Which is the most abundant metal on earth?
A.
Gold
B.
Aluminium
C.
Copper
D.
Zinc
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Answer :
Option B
Explaination / Solution:
Aluminium is most abundant.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q5.
The impurities associated with ore is known as
A.
flux
B.
froath
C.
gangue
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Answer :
Option C
Explaination / Solution:
Gangue are the unwanted particles present with ores.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q6.
The common impurity present in most of the ores is
A.
S
i
O
2
B.
S
n
O
2
View Solution
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Answer :
Option A
Explaination / Solution:
Silica is most common impurity present in ores.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q7.
Which metal is also found in sea beds ?
A.
Calcium
B.
Magnesium
C.
Manganese
D.
Aluminium
View Solution
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Answer :
Option C
Explaination / Solution:
Manganese is found in sea beds.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q8.
The sulphide ore of iron is
A.
magnetite
B.
cryolite
C.
haematite
D.
iron pyrite
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
F
e
S
2
is iron pyrites.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q9.
Carbonate ore of iron is
A.
Galena
B.
Carnalite
C.
calamine
D.
siderite
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
F
e
C
O
3
is siderite.
General Principles and Processes of Isolation of Elements
Prepare / Learn
Q10.
The process of separating gangue and other impurities from the metals is known as
A.
magnetic separation
B.
levigation
C.
calcinations
D.
benefaction of ore
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
Process of removal of impurities from ore is known as concentration of ore or benefication of ore.
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General Principles and Processes of Isolation of Elements
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General Principles and Processes of Isolation of Elements
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