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9th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Metals lose their electrons easily because:
Choose an answer
They are electronegative
They have electron affinity
They are electropositive
Good conductors of heat
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Question # 2
Number of protons+ neutrons is :
Choose an answer
Atomic mass
Mass numbers
Both
Nil
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Question # 3
Non-metals do not reaction with
Choose an answer
Strong bases
Concentrated acids
Dilute acids
Salts
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Question # 4
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 # 5
Dissolution in water is due to ____________ bonding.
Choose an answer
Ionic
Covalent
Hydrogen
Nil
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Question # 6
Sodium - potassium alloy is used in nuclear reactor as a:
Choose an answer
catalyst
coolant
reactant
absorber
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Question # 7
NaOH is prepared by ____________ of NaCL (aqueous).
Choose an answer
Electrolysis
Decomposition
A & B
Nil
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Question # 8
The molar mass of H
2
SO
4
is:
Choose an answer
98 g
98 amu
9.8 g
9.8 amu
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Question # 9
The equation of relationship between atomic number (Z) and mass number (A) is
Choose an answer
A = Z + N
A = Z - n
A = Z
A =2Z + n
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Question # 10
Which molecules is donor in nature?
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H
2
NH
3
O
2
HF
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Question # 11
Which one of the following is not an electrolyte?
Choose an answer
sugar solution
sulphuric acid solution
Lime solution
Sodium chloride solution
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Question # 12
All metals are solid except
Choose an answer
AI
Mg
Na
Hg
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Question # 13
Which is kept constant in the Charle's law:
Choose an answer
Pressure
Temperature
Volume
Mass
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