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9th Class Chemistry Chapter 9 Table of Elements and Their Symbols English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Addition of OXYGEN is called.
Choose an answer
Reduction
Conduction
Oxidation
Nil
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Question # 2
It is a good reducing agent
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Fe
H
C
O
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Question # 3
All electrolytes are:
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Conductor
Insulator
Semi conductor
Nil
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Question # 4
____________ do not conduct electricity.
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Electrolyte
Non-electrolyte
Both
Nil
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Question # 5
The cathode of Nelson's cell is made up of
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C
Zn
Cu
Fe
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Question # 6
Spontaneous chemical reactions take place in:
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electrolytic cell
Galvanic cell
Nelson' s cell
downs cell
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Question # 7
____________ of copper is done by electrolysis.
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Production
Refining
Both
Nil
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Question # 8
By electrolytic refining of copper , it is ____________ % pure.
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98
99
99.99
100
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Question # 9
Metals are covered by using.
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Baeyer's test
Bohr's
Electrolysis
None
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Question # 10
The cathode of Daniel cell is made up of
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Zn
Cu
AI
C
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Question # 11
In the redox reaction between zn and HCI. the oxidizing agent is:
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zn
H
+
C
H
2
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Question # 12
During the formation of water from hydrogen and oxygen, which of the following does not occur?
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Hydrogen has oxidized
oxygen has reduced
oxygen gains electrons
hydrogen behaves as oxidizing agent
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