General Principles and Processes of Isolation of Elements - Online Test
Q1. Metals which occur in native state in nature
Answer : Option B
Explaination / Solution:
Least reactive metals are found in native state.
Q2. Metal which is found in free state is
Answer : Option B
Explaination / Solution:
Gold is least reactive metal.
Q3. Which among the following statement is correct?
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.
Q4. Which is the most abundant metal on earth?
Answer : Option B
Explaination / Solution:
Aluminium is most abundant.
Q5. The impurities associated with ore is known as
Answer : Option C
Explaination / Solution:
Gangue are the unwanted particles present with ores.
Q6. The common impurity present in most of the ores is
Answer : Option A
Explaination / Solution:
Silica is most common impurity present in ores.
Q7. Which metal is also found in sea beds ?
Answer : Option C
Explaination / Solution:
Manganese is found in sea beds.
Q8. The sulphide ore of iron is
Answer : Option D
Explaination / Solution:
FeS2 is iron pyrites.
Q9. Carbonate ore of iron is
Answer : Option D
Explaination / Solution:
FeCO3 is siderite.
Q10. The process of separating gangue and other impurities from the metals is known as
Answer : Option D
Explaination / Solution:
Process of removal of impurities from ore is known as concentration of ore or benefication of ore.
