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10th Class Chemistry Chapter 9 Chemical Equilibrium English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
The rate of reverse reaction in the beginning.
Choose an answer
Slow
moderate
Very fast
Low
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Question # 2
The dynamic equilibrium in irreversible reaction.
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Never establishes
Establishes after completion of reaction
Establishes before completion of reaction
Establishes very soon
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Question # 3
K
c
is always equal to
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Rf/Rr
Kf /Kt
Kf/Kr
Rr/Rt
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Question # 4
An equilibrium is achievable only in a:
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big system
small system
open system
closed system
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Question # 5
The value of equilibrium constant (Kc) depends only on:
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temperature
Pressure
concentration
density
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Question # 6
What is the colour of hydrogen iodide in product?
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Purple
Yellow
Blue
Colorless
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Question # 7
The characteristics of reversible reactions are the following except:
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Products never recombine to form reactants.
They never complete
The proced in both ways
They have a double arrow between reactants and products.
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Question # 8
In irreversible reaction, dynamic equilibrium:
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Never establishes
Establishes before the completion of reaction
Establishes after the completion of reaction
Establishes readily
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Question # 9
Such reaction which can be made proceed in either direction depending upon the condition:
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simple reaction
reversible reaction
irreversible reaction
chain reaction
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Question # 10
Equilibrium constant value "K" is equal to:
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Kt / Kr
Ki / Kr
Kc / Qc
Qc /Kc
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Question # 11
Which gas is used to manufacture king of chemicals sulphuric acid?
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N
2
O
2
Cl
2
S
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Question # 12
When the numbers of moles of both sides are equal in a reaction, then the unit of K
c
will be:
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No unit
mol
-2
dm
6
mol dm
3
mol
-2
dm
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Question # 13
A dynamic equilibrium
Choose an answer
Reaction stops to proceed
Amounts of reactants and products are equal
Rate of forward and reverse reaction are equl
Reaction can no longer be reversed.
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