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Online Tests
Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
K
c
is always equal to
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Rf/Rr
Kf /Kt
Kf/Kr
Rr/Rt
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Question # 2
In chemical reaction , the substances that combine are called.
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Reactants
Products
Equlibrium
Numerator
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Question # 3
The reaction in which the products can recombine to form reactants are called.
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Reversible reaction
Irreversible reaction
Decomposition
Addition
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Question # 4
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 # 5
The reaction will attain the equilibrium if:
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Qc<Kc
Qc > Kc
Qc = Kc
Qc = 0
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Question # 6
We exhale gas in the atmosphere during respiration.
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Carbon dioxide
Oxygen
Nitrogen
Water
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Question # 7
The plant use
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Carbon di oxide
Oxygen
Nitrogen
Sulphur
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Question # 8
When the magnitude of Kc is very large it indicates.
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Reaction mixture consist of almost all products.
Reaction mixture consist of almost all reactants.
Reaction has not gone to completion
Reaction mixture has negligible products.
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Question # 9
Which type of reactions do not go to completion?
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Irreversible reaction
Reversible reactions
Addition reactions
Decomposition reactions
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Question # 10
Which one of the following statements is not correct about active mass?
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Rate of reaction is directly proportional to activ emass.
Active mass is taken in molar concentration
Active mass is represented by square brackets
Active mass means total mass of substances.
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Question # 11
The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are
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mol
-2
dm
3
mol
2
mol dm
-1
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Question # 12
The substances formed during the chemical reaction are called.
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Product
Reactants
Radicals
Element
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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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