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9th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Suspension's solute particles ____________ at bottom.
Choose an answer
Dissolves
Settle
Both
Nil
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Question # 2
________________ observed that formation of covalent bonds.
Choose an answer
Rutherford
G.N Lewis
Both a and b
Bohar's
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Question # 3
Formation of water form hydrogen and oxygen is:
Choose an answer
Redox reaction
Acid-base reaction
Neutralization
Decomposition
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Question # 4
H° + H° are ________________ in energy.
Choose an answer
Lower
Higher
Medium
Nil
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Question # 5
Energy of a shell is ________________
Choose an answer
Variable
Constant
Cannot be changed
Nil
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Question # 6
Long form of periodic Table is constructed the basis of:
Choose an answer
Mendeleev postulate
atomic number
atomic mass
mass number
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Question # 7
The earth is made up of ___________ % of iron.
Choose an answer
4
5
6
7
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Question # 8
Protons carry _________ charge.
Choose an answer
+
_
No
Neutral
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Question # 9
The atomic radil of the elements in periodic table:
Choose an answer
increase form left to right in period
increase form top to bottom
do not change form left to right in period
decrease form top to bottom in a group
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Question # 10
The formula of benzene is _________
Choose an answer
C6H6O3
C6H6
C12H22
Nil
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Question # 11
The mass of one molecule of water is:
Choose an answer
18 amu
18g
18mg
18kg
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Question # 12
In period, ionization energy of elements
Choose an answer
Increases
Decreases
Remains constant
None of these
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