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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
Which is used for industrial manufacture of NaCI?
Choose an answer
Daniel cell
Down's cell
Nelson's cell
None of these
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Question # 2
All electrolytes are:
Choose an answer
Conductor
Insulator
Semi conductor
Nil
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Question # 3
____________ is prevented by Metallic coating.
Choose an answer
NaCl
Rust
All
None of these
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Question # 4
Copper extracted from its ore is ____________ % pure.
Choose an answer
98%
99%
96%
Nil
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Question # 5
In the redox reaction between zn and HCI. the oxidizing agent is:
Choose an answer
zn
H
+
C
H
2
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Question # 6
The cathode of Nelson's cell is made up of
Choose an answer
C
Zn
Cu
Fe
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Question # 7
In metal hydrides, the oxidation number of hydrogen is
Choose an answer
+1
-1
+2
-2
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Question # 8
Which one is not a property of electrolytic cell?
Choose an answer
It consists of one complete cell
Anode has +ve charge
It converts electrical energy into chemical one
Anode has -ve charge
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Question # 9
____________ do not conduct electricity.
Choose an answer
Electrolyte
Non-electrolyte
Both
Nil
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Question # 10
____________ are good conductors of electricity.
Choose an answer
Covalent compound
Metals
Both
None of these
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Question # 11
Reduction means
Choose an answer
Removal of H2
Removal of electrons
Gain of electrons
Gain of O2
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Question # 12
Electrolyte is ____________ solid form.
Choose an answer
in
Sometimes in
Never in
Always in
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