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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
Metals are covered by using.
Choose an answer
Baeyer's test
Bohr's
Electrolysis
None
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Question # 2
In silver plating Anode is made of:
Choose an answer
Gold
Ag
Neon
Nil
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Question # 3
Copper extracted from its ore is ____________ % pure.
Choose an answer
98%
99%
96%
Nil
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Question # 4
____________ agents gains electrons in chemical reaction.
Choose an answer
Reduction
Oxidation
Both
None of these
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Question # 5
It is a strong electrolyte
Choose an answer
H2O
CH3COOH
NaOH
C6H6
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Question # 6
It is a good reducing agent
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Fe
H
C
O
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Question # 7
Gases produced in Nelson's cell are:
Choose an answer
H
2
and O
2
H
2
and CI
2
H
2
and N
2
CI
2
and O
2
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Question # 8
The metallic plates through which electrons enters and leaves electrolytes:
Choose an answer
Wires
Electrodes
Both
Nil
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Question # 9
Addition of OXYGEN is called.
Choose an answer
Reduction
Conduction
Oxidation
Nil
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Question # 10
Oxidation means
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Gain of oxygen
Removal of oxygen
Gain of hydrogen
Gain of electrons
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Question # 11
____________ do not conduct electricity.
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Electrolyte
Non-electrolyte
Both
Nil
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Question # 12
Formation of water form hydrogen and oxygen is:
Choose an answer
Redox reaction
Acid-base reaction
Neutralization
Decomposition
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Question # 13
Br2 + H2S __ 2HBr + S, which one is oxidizing agent:
Choose an answer
H2S
Br2
S
2HBr
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