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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
____________ agents gains electrons in chemical reaction.
Choose an answer
Reduction
Oxidation
Both
None of these
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Question # 2
Gain of electrons in a reaction is called ____________reaction.
Choose an answer
Oxidation
Reduction
Both
Nil
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Question # 3
Addition of OXYGEN is called.
Choose an answer
Reduction
Conduction
Oxidation
Nil
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Question # 4
____________ is an irreversible cell.
Choose an answer
Dry cell
Chargeable cell
Zn cell
None of these
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Question # 5
Spontaneous chemical reactions take place in:
Choose an answer
electrolytic cell
Galvanic cell
Nelson' s cell
downs cell
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Question # 6
The most common example of corrosion is:
Choose an answer
Chemical decay
Rusting of iron
Rusting of aluminum
Rusting of tin
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Question # 7
The cathode of Daniel cell is made up of
Choose an answer
Zn
Cu
AI
C
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Question # 8
____________ cell is made of two half of cells.
Choose an answer
Zinc cell
Galvanic
Both
All
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Question # 9
All electrolytes are:
Choose an answer
Conductor
Insulator
Semi conductor
Nil
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Question # 10
CO2 the oxidation number of C =.
Choose an answer
+1
+2
+3
+4
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Question # 11
Which one is strong electrolyte ?
Choose an answer
NH4OH
NaOH
a & b
Nil
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Question # 12
Oxidation means
Choose an answer
Gain of oxygen
Removal of oxygen
Gain of hydrogen
Gain of electrons
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