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Online Tests
Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
An equilibrium is achievable only in a:
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big system
small system
open system
closed system
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Question # 2
If Qc > Kc the reaction will be in
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Chemical equilibrium
Static equilibrium
Reverse reaction
Forward reaction
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Question # 3
The reaction will attain the equilibrium if:
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Qc<Kc
Qc > Kc
Qc = Kc
Qc = 0
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Question # 4
The forward reaction takes place:
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Right to left
Left to Right
Only to right
Only to left
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Question # 5
For which reaction Kf is the rate constant?
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Forward reaction
Backward reaction
Upward reaction
Downward reaction
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Question # 6
The color of hydrogen Iodide is:
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Colourless
Black
Red
Pink
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Question # 7
Formation profess of Ammonia by the combination Hydrogen and Nitrogen was given by:
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Dalton
Thomson
Haber
Waage
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Question # 8
In a chemical reaction, the substance that combine are called.
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Reactant
Products
Mass
Material
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Question # 9
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 # 10
The rate of reverse reaction in the beginning.
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Slow
moderate
Very fast
Low
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Question # 11
The reaction goes from left to right , if:
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Qc = Kc
Qc > kc
Qc<Kc
Qc = 0
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Question # 12
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 # 13
Dynamic means, reaction is:
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In forward direction
Stop
In reverse direction
Still continuing.
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